Sisyphean

The trouble with life is that you never know what might come up, so we live in this world, and take it as it comes, and as such we adapt and learn, and make choices that affect you in every which way.

Never should you regret a choice, a path you took, or a decision you made, and neither should those who forced you to take it.

There should be no discussion or attempts at altering ones mind, once it is set, for lest he is weak in his thoughts, joining Sisyphus would be a less futile task.

"And so it is
Just like you said it would be
Life goes easy on me
Most of the time"