When you are healing, remember: just because you are going through hell right now, doesn't mean you will never ever smile again. Pain is purely temporary. Remember that before you give up and decide you will never be whole again. A year from now, you are going to be an entirely different person. You would have shed this skin made of pain and heartache and become someone stronger, more compassionate and better. Every day that passes, you grow further and further from the thing that caused you pain. Forgive yourself. You are human, you are allowed your flaws.
Self care is so important. You cannot look after anyone else, unless you learn how to look after yourself. Take care of your mind, your body and your soul. Do not allow anyone to tell you that you are selfish during this time. Be kinder to yourself.
Stop trying to be there for everyone all the time. You are needed most of all for yourself right now. Being there for other people more than you can cause you more heartache and burden than necessary. Try, but do not compromise your mental health for anyone else's benefit. Stop wishing for that time machine. I'm sorry. There is no way to go back and fix what has happened. There is no way to change what has happened to you. You can only learn from it and move forward. Living in what ifs, is living in the past and hindsight is always 20/20. Terrible things happen for a reason, sometimes they lead us to the happiest moments of our lives. Remember that because it will stop you from forever living in the past.