its difficult, its almost impossible to, but its almost not completely impossible. to begin something new you need to end something, something that is old, past, hurtful, painful and damn straight not worth your energy. But you have to take the first step, all i can help you with is tell you something that might give you a bit of strength and that is there are 7.7 billion people on this planet and if you think you are alone, that nobody can understand what you are going through, you just need to change your purview a bit. there might be a possibility that today there might be no one to understand your struggle , your problems but have trust on the 7.7 billion people on this earth and also on the infinite of them who came before you and on those infinite who will still come after you that there must have been or at least will be someone who has or will have the same struggles, same pain, same fight that you do today. so you are not alone in your fight. take your first step, breathe in and out a deep breath and give yourself some break .