I'm afraid to play cashgame because it seems too addictive. That story of you losing and always wanting to recover and entering an infinite cycle just losing. I don't know, for me, it was always safer to play MTT or SnG, if you lose, you lose the Buy-In, you think about why you lost, study and try again another day, the loss will never be that big.
Others have said a lot of important stuff, I would just like to add some practical advice: I know you are a student of music so how could you make your life economy more simple playing MTT’s?
Let’s suppose you need some time to practice piano, you need some time to spend with your family and friends and perhaps you need a huge time spending in a regular job.
If you have the love of your life or kids you must have time to spend with them as well.
Now, economically speaking and being as much realistic as possible: could you really afford spending something between 4 and 8 hours per day playing MTT’s or any other tournaments without compromising your personal and professional life?
Tournaments use to consume a lot of time and energy (cause the variance is huge, some professionals play during 3-4 months without winning anything), so I add what the other have said, as @Station_Master
, cash games have less variance and you can control variance, if you are not in a good mood/shape you can simply shut the tables and leave, if you had lost 3-4 buy-ins and you feel is not the best moment, shut the tables and so on.