You found out on your own or someone pointed it out? If you found out on your own congrats cause the hardest part is to accept it. Now try to slowly find ways to overcome it. It’s all trial and error. This is something huge so it will take time. Start by finding out what’s making your toxic. It can be cause of a past incident or something you did not process at the right time. Understanding the cause will help you find ways to overcome it.