I’ve always believed that life rewards focus and persistence. If you keep working at something you will eventually make progress. What you have to be careful about is managing your expectations. You also need to take responsibility for the outcome(s) you want and not expect someone else to create the reality you want. Happiness is no exception. Happy people work at being happy and start with themselves first. They have to deal with unhappy moments like everyone else, but have trained themselves to practice acceptance rather than resistance and have fine tuned their own capacity to muddle through and make positive changes.