Reflect, today, on any relationships that are difficult for you. Especially reflect upon how ready you are to forgive and to turn the other cheek. Doing this may just bring you the peace and freedom you seek in that relationship.
Regarding our thoughts, sometimes we can allow ourselves to dwell excessively upon this or that. As a result, these thoughts can lead us to sin. The key is to “pluck out” that initial thought that produces the bad fruit.