I remember when my anxiety first started becoming a significant problem in my life, I dabbled with benzos (which helped immensely), but I couldn't get a script and didn't have any reliable source for them on the street. I happened to also start experimenting with amphetamines at the time, and they made me so confident and talkative and productive, I thought I had magically cured my anxiety. Unfortunately, the anxiolytic effects left me as I came down and the anxiety came back with a vengeance. So I would redose the amps and the crash brought the anxiety back. Long story short, this lead to a four year addiction to amphetamines. Now, mind you, I've been addicted to amps, benzos, prescription opiates, and heroin. The god awful truth is, the amps were the worst. I still have lasting damage from the years where I took them. Not even heroin had me breaking into houses, but the amps had me regularly breaking into homes where I knew there were ADD/ADHD meds. It also caused nerve damage so now I cannot hold my hands still, which has made me incapable of performing any task by hand requiring precision and care. My tremors are embarrassing and have never stopped despite almost a year off of the amps. It was so bad I was taking upwards of 400mg of Vyvanse at a time and snorting literally as much Adderal as I could fit in my nose (about 100mg at a time), staying awake for days on end with little food. At night I would regularly lapse into psychosis, having vivid hallucinations only to snap out of it and find that none of it really happened. I was six feet tall and 120 pounds on a good day, dropping into the teens when on a particularly nasty binge.
Now, I medicate myself with alprazolam and clonazepam, finding the former effective for panic attacks and the latter good for keeping me calm for longer periods. These drugs took my college grades from failing to A's. My point is, amps can be a dangerous way to relieve anxiety. Everyone is different and I doubt most people who use uppers for the anxiolytic effects will take the path I did, but it's a path that is there. I don't take benzos to the point of an apathetic haze, but maybe that's because of the severity of my anxiety (I'm diagnosed with a psychiatric condition that manifests in depression, anxiety, and obsessive compulsive disorder, among other things). Anyway, I'm starting to ramble here so I'll cut myself off.
tl;dr: Amps can lead to crippling addiction and make you come out worse off than when you started, and I am a perfect example. Be careful with them. Benzos are addictive and the withdrawals are among the very worst, but to me they have not damaged me the way amps did.
NOTE: There are no exaggerations here, that story is 100% true
Stay safe everyone