The moment you start being nice, instead of bitter, and especially in the moments, when you truly feel bitter, the real positive change starts. It is a magic, which everyone possesses, but needs to master.
There is a way out of this vicious circle. Do you see the vicious circle? You are already one foot out.
Some souls are there but should not be around you, as they will only rob you of your energy and peace. Some souls are there to give you a lesson and then go. Some souls are there to stay, to help you fulfil your mission in this lifetime.