Lie a bit to yourself is my advice

“Never tell your problems to anyone...20% don't care and the other 80% are glad you have them.”
Lou Holtz


People won't have time for you if you are always angry or complaining. 
Stephen Hawking


Unfortunately i am not like that but i have one friend that when asked about his life everything is great, a bit of exaggeration but i think this technique helps the fact. You start to believe that everything is really great.

lie a bit to yourself is my advice