Little confused by your typing but I think your issue is comparing yourself to your peers, coupled with a lack of social interaction. Everyone is on their own path, one might focus on career while another on relationships. You may not notice you’re comparing yourself, but one day you will look back and notice it. At my low points I felt like a failure because I’m [age] years old and I’m still here while my friends are there. [Heck, I’m 26 without kids and the local paper has a photo of two friends from high school who had their first kid on new year’s day.] At some point something will just click.

Don’t get discouraged you didn’t make the list. You could do a number of things from here, you could study more, evaluate what needs your attention, and work harder towards your job goals. You could view your life as a whole and figure out what you like and don’t like and work on improving them. You mentioned how you miss your friends, try setting up one night a week [if possible] where you guys can hang out. In person is always best, but if there’s an online game you like, or Skype or whatever. All but one friend lives at least half an hour away, and the friend who lives in town works long hours and has a 2 year old. I work equally long hours and don’t have a car, but I text everyone once at week. You might need to find this balance in your life. Another option is to find a circle of like-minded people to hang with and strive for similar goals. You can still have both groups of friends, but it never hurts to make new friends.

Good luck to you!