The best lever for our contentedness.
Full responsibility. This single action in our life can give us instant contentedness at any moment.
Tension in life comes from something we think someone else should do, say, or believe. It's impossible to have tension without having other people implicated in the tension.
But taking full responsibility for our lives neuters that tension.
When we take full responsibility for our lives - the good, the bad, the mundane - the tension dissolves because we realize we hold the keys to changing it if we want to. So not only does personal responsibility gift us contentedness, it also empowers us. If we are personally responsible then we have the personal power to change.
Discord with others inevitably leads to discontent.
Ditch the discord. Take full responsibility for your life, and you'll be using the best lever at your disposal for your own contentedness.