Letting go may be hard, but you deserve to be happy. Move on from that thing you are clinging on to especially if the thought of it makes you miserable.
Letting go of the past is also just as important as letting go of relationships that make people miserable. The miserable past is gone and can not be undone. Let go of the past. Harping on the past never did anybody any good any ways. All it does is keep people from being happy and productive people. ~ Marie Buck
Letting go of loyalty can be difficult however being miserable is not something for forward progress. I languished in a situation for years and was very unhappy till finally I said enough is enough. ~ Eugene O’Neil