a Hard time

I am normally reasonably positive but lately i have felt so wrapped up and suffocated within my problems,i think its alot to do with seasonal disorder every year i get it.Also i get lonely and would love to be in a health relationship,but im not healthy so i doubt that one.Relationships seem great for the first few months then my problems gradually  creep back in,i dont want to go through the heartache again and cause anyone else problems,  but dont want to be single either.I just read that 3000mg of vitamin d is good for treating the sad so im going to try it,god i wish something would work,vent,vent,vent.......ahh thats bit better!