It's not egotistical to want to live a happy life.

But if you can't help but feel that way, spend time helping others. It's a great way to feel good about yourself whole simultaneously spreading happiness to others who need it.

Happiness may not be easy to find but is that a good enough reason to give up trying? Not much is easy in life. I personally struggled to find a form of exercise I enjoyed for 30 years. I was resistant to exercise, gaining weight, feeling kinda shitty. Then when COVID hit I bought a bike, found trails nearby to me and now I spend a minimum of an hour a day riding, soaking up nature and it's honestly some of the happiest times I've had in years. There's nothing egotistical about that.