Damn, guys...
I've made mistake after mistake (especially this last year) and I'm still happy. I'm broke and not in a relationship, but I don't have debts and I don't have traumatizingly stressful custody fights. My biggest sources of stress are things I can change when I get off my ass and try.
Pick one goal if you can't fix everything. Some people would vomit from stress of not having a job or a Relationship, but if you allow yourself to be a walking ball of stress, focusing on your every failures, then you're not going to develop the way you want to.