There are two distinct approaches in trying to become more content.
1,
By skill and effort, change the world so that it matches your current view of how things should be.
2,
By skill and effort, change your current view so that it matches how the world is.
No. 1 is not achievable.
No.2 is.
No.1 creates the accumulation of power/influence which has its own equal and opposing force that manifests in various ways.
No,2 doesn't.
Being content is when you don't want anything to be different.
Wanting anything to be different is to be not content.
Being content is being at peace.