You should absolutely find a psychiatrist or counselor. They deal with people going through this ALL. THE. TIME. I absolutely believe that people run to medications too quickly these days, but drugs like Adderall et al. help people like you to find focus, break self-destructive patterns, and get back to a baseline of normal.
I have considered addrell many many times only to hear from close friends that it will turn me into a bot. That's kept me away from it but perhaps I should reconsider...again.
Again, ou need a professional to know if it appropriate or not. Everyone fights with their attention spans, changing interests, lazy days and so many flaws we have. The question is really to know if there is a problem or if you just need to learn to know yourself a bit more.
In all cases, suicide has permanent implications to get out of a temporary condition. Even if it looks so bad, stick around, it will get better, or you'll learn how to cope with it better.