Contentment is a state of the heart. The heart beats in peace with God. It is a state of satisfaction with knowing God and who He is. True contentment is permanent no matter what stage of life you are in.
Life has seasons. It will always have changes and God may bless us with more money, or even a bigger house, or the other things we have in our minds that we desire- or that may not be His plan for your life. He may have something else in mind-something more than you imagined for yourself. You may also experience crisis, illness, unemployment, loss, frustrations and stress. But life is constant and if we constantly wait to receive our contentment, to "reach" this state we are chasing after, you may never in this life reach it if you don't realize the root of what contentment actually is.
I believe that contentment is such a large part of the Christian walk. The Bible is abundant with scripture on contentment. A few are below:
"For the sake of Christ, then, I am content with weaknesses, insults, hardships, persecutions, and calamities. For when I am weak, then I am strong."
2 Corinthians 12:10
"Now there is great gain in godliness with contentment, for we brought nothing into the world, and we cannot take anything out of the world. But if we have food and clothing, with these we will be content."
1 Timothy 6:6-8
"As for me, I shall behold your face in righteousness; when I awake, I shall be satisfied with your likeness."