Everything gets better, this is not your ending.
Life is full of beautiful moments, hold on to those to reflect on when things get difficult.
Nothing in life has happened to you. It's happened for you. Every disappointment. Every wrong. Even every closed door has helped make you into who you are.
Life does not always give you what you want but if you look closely you will see that it gives you what you need for your growth. For today, think positive thoughts and believe in yourself.
These times are hard but they will pass. These hard times are strengthening you for bigger things to come. You are going to be alright, the problems of today can be worked through.