Resentment and self pity (or) gratitude and awareness - which set of traits do you want to give your time and energy today? Which set will nourish you? It is true that we actually have plenty of choices over what paths our thoughts will take.
Even if small-minded, unhealthy thoughts that come and come again don't have to rule us if we redirect them and do not give them our energy.
Detachment is a friend of the mind that is developed through frequent use. With awareness, you can always chose to redirect your thoughts, which in turn, can redirect your feelings.
Warmly,
Cheryl