The largest shift in my attitude towards life, and the one which has created the most happiness has been just this: minimal or, preferably, no expectations. I make a distinction between no expectations and expecting nothing from an individual or situation. This does NOT mean having no plans, hopes and dreams! Hopes and dreams are shattered only when we solidify them into expectations. Another by-product is lack of resentment (or as they say in AA “ expectations are resentments just waiting to happen”).