List all of the things your ego says you need to be happy. Notice that the one thing they have in common is that they all seem to be beyond your reach.
Having a lovely relationship, a beautiful home or a healthy body is not what causes us to be happy. Nothing in the world is the cause of anything. It is always the effect. Our happiness depends simply on not having the need to look for something to be unhappy about. It is important we remind ourselves of this to keep our mind open to the Self within that is always happy.