Sounds like you need to fall in love. With a girl. Note: This will solve none of you problems. But it certainly won't be boring either. Additional note: Whoever convinced you that your life has a track and you need to figure it out did you a serious disservice. It is your life. Loving and serving those dear to you can be an amazing thing. You'll be no help to them if you are miserable.
Falling in love is best done when things are going well for you. Particularly since the median love interest won't work out. And "with a girl" seems oddly specific. Assuming he's straight, he's probably not going to fall in love with a guy, and if he's gay, this is terrible advice. Or do you mean with a girl as opposed to a hobby, career, field, etc.?
If you fall in love only when things are going well for you then that may be a significant reason you believe that the median love interest won't work out.