I also agree about finding a support system. For me, it was a mentor at my job. She pushed me to go to college and was there to encourage me when I struggled. If you can find someone like that it can make all the difference.
I have found the following quote helpful: "Do you remember the things you were worrying about a year ago? How did they work out? Didn't you waste a lot of fruitless energy on account of most of them? Didn't most of them turn out all right after all?" -- Dale Carnegie
Keep your ultimate goal in sight and just keep pushing toward it. You will get there eventually.
Best of luck to you.