There is an initial generalized euphoric effect from drugs like Adderall that seems to alleviate many troublesome feelings like anxiety and depression. These effects don't generally last long and in fact the anxiety may rebound. Tolerance is another issue and you may find yourself needing higher and higher doses. Try to do supplemental things like mindfulness, CBT, talk therapy to address your anxiety even if this drug is helping. Anxiety is not an emotion. It is the thoughts that habitually happen when you feel a genuine emotion like fear around other people. Understanding where this fear comes from and using rational thought to overcome it is something that will change your life with no side effects and no cost to your body at all. It takes practice and patience but the rewards are permanent.