A2. If your country is OK (e.g. suicide rate there is less than 15 per 100000 people per year), I think you need to search for the intersection between things you have passion for, and things that are paid well. After you will find that intersection, I think you will get better. You see, when you was a kid, just following your passion was enough for happiness. In the adult world, however, you also need some financial independence for that.
A3. There are other things, like alcoholism or herbal medicine, but I generally do not recommend those to young people.