I don't personally think it has anything to do with clinical depression, but a combination of youthful ego (not accepting defeat in any task you need to complet

I don't personally think it has anything to do with clinical depression, but a combination of youthful ego (not accepting defeat in any task you need to complete or compete with), and most probably an undiagnosed ADHD. I'm talking from a personal experience that went unnoticed for 35 years, until I was diagnosed with HSP (Highly Sensitive Personality) with traits of ADHD leaning towards Asperger's Syndrome, after I realized something is very wrong with me and my emotions. I could be wrong of course and indeed OP needs medical help, but I believe he or she stresses out with every right to do so, as he / she deals with full-stack development lol! I have been there my self with full-stack and decided it's too much for me and switched to back-end development.