For starts, try to see my post here
http://bluelight.org/vb/threads/798049-Adderall-and-emotions?p=13696744&viewfull=1#post13696744 where I attempt to explain how some drugs influence your emotions.
However, you should not be sad about being to emotional and you shouldn't be afraid of showing your emotions. Emotional intelligence is a notion that is starting to gain attention with amongst others social sciences but also in practice. Today, many companies before they hire you use different personality tests, which could be said to be the precursor to uncover an individuals emotional intelligence. However, some companies (including some of the most attractive working places) are starting to use tests with the purpose of measuring the emotional intelligence of a potential new employee. Some surveys have shown, that many companies (there haven't been sufficient empirical research yet to justify that I could say most companies) are starting to make the emotional intelligence one of the most important capabilities a new employee should have. This is also resulting in people trying to develop tests where you can measure your emotional intelligence. Use google or ask me if your are interested.
I a more traditional perspective, the focus is on one form on intelligence only. The intellectual intelligence, but even this concept might be to broad for a traditional conceptualization of intelligence as intellectual intelligence covers all cognitive skills including mathematics, linguistic capabilities and more diverse intelligences such as as musical and bodily intelligence and several more.
We all know the old IQ measurement, which mostly covers mathematical capabilities. We have often seen people with an extraordinary high IQ having great difficulties with their social interactions (the most extreme cases being savants, ala rain-man though that is not an adequate portrayal of savants). Having an IQ of 200 but with no capabilities to interact with others will often make it impossible for such a person to get jobs, get friends etc in effect wasting some of the possibilities their gift of intelligence could have resulted in. However, a little lower IQ (still above average) combined with a great emotional intelligence will often be much more desirable for companies and the person would be better functioning him or herself as well. Having a high emotional intelligence makes you good in social relations and makes you good at dealing with emotions and even hard times, this combined with a high intellectual intelligence will create a kind og snowball effect or synergi effect. Not only can the person handle emotional stress et cetera, but they are also good a solving other kind of problems and be able to change behavior if necessary if old behavior is no longer sufficient. In a paper from 1978 Argyris and Schön proposed the two concepts single-loop learning and double-loop learning. Single-loop learning is sufficient as long as your existing knowledge, capabilities, habits (or routines at an organizational level( is enough to handle problems. Single-loop learning can (maybe too simplified) be said to make you better at what you already do and know. But if old knowledge and behavior are more longer sufficient to deal with a new problem, single-loop learning is no longer enough. Double-loop learning is sufficient to create new behaviors that can respond to the new problems, and result in change in a persons taken-for-granted, unconscious assumptions making that person more aware of his unconscious assumptions resulting in better self-insight and making the person better to deal with changing circumstances.
You will often experience addicts being stuck in the old habits. Addicts is one of the best examples of individuals not being capable of achieving double-loop learning. They are extremely good at single-loop learning as an addicts bad qualities often get more and more pronounced and they simply refuse to acknowledge their problems and the need for change. Addicts often also possess poor emotional intelligences. Some psychiatrists might say to an addict, just an example, that despite the addict being 30 years old, he have the emotional capacities of a 13 year old. In other words, he is as good (bad) as 13 year old person at handling his emotions. Often, the emotional intelligence of addicts started suffering the first time they took drugs, being more and more influenced as their use (soon turning into abuse) of drugs gets worse. Thus, if you an addict is 30 and he started using drugs as a 15 year old, his emotional capacities might be equal to the emotional capacities he had as a 15 year old.
Other forms of intelligence might include social intelligence, which is related to emotional intelligence, as emotional intelligence is required to have good social capabilities. However, emotional intelligence covers more than just social skills. The notion also covers your ability to recognize and consciously deal with your own emotions. Emotional intelligence should result in higher conscious self-insight and better reflexive and reflective capacities making an individual more likely to be able to change otherwise unconscious, taken-for-granted assumptions and self-insights resulting in actions that are based on these unconscious assumptions instead of actions based on conscious relexions.
If you ask me it is only a good sign that you can recognize your emotions and that you show them. To some degree at least.