Abandon the project?

Andrew cancelled our gym time saying that he has tons of work to do.  I wouldn't be surprised if he cancelled because of how I fubar'd socially last week.  Doubts keep popping up whether I should continue this project.  This transitional phase, whether it is a transitional phase or not, is painful.  What will happen when I'm more outgoing?  Will I be even more lonely?  INTJs are considered weird by others, and that is a big social no no.  Why did I ever leave Katherine?  Why didn't I tell her that I loved her?  Losing her is the worst mistake of my life.