The whole point in seeking contentment is that you can never really find it.
That is the point of life.
Life is the journey you take on the way to find contentment.
Contentment in itself is either a brief and fleeting moment that you catch glimpses of occasionally, or it is what is found in death.
Content because you have left the struggle that is life in general.
Even the easiest life in the world is a struggle if you look closely enough - even if it involves the molecular level.