“Every day I argue myself out of that childish and unkindly humour which makes us desire that our own ills should arouse compassion and mournful thoughts in those we love. So as to bring on their tears we exaggerate our misfortunes beyond all measure.” We owe ourselves gratitude and perspective. Our own troubles rarely amount to anything serious or worth others’ concern. Even when we have valid complaints, our moments of gratitude almost always outweigh them.
But to argue yourself out of expressing your most unbecoming thoughts has its risks as well. We need to let minds be ashamed of themselves at times and to express the difficult, risky emotions. To call all passionate thoughts childish is to give up the beautiful emotions as well.
As for how others react to those expressed thoughts, if you communicate openly and honestly, any difficulties should be over overcome soon enough. Better to leave someone nursing short term wounds than left wondering what just happened, and why.