You will have some bad days, weeks and may be months. But you will have to understand that happiness comes in waves and there has never been an ocean totally frozen.
It may get worse, but believe that eventually it will get better. It always does. Your growth is not defined by your bad days, you are not defined by your bad days. Take all the time you need to strive from the place you are in now. Everything is temporary and even the darkest times will pass. You will be fine, remember that.