You can't have a Happy Life. There are happy moments and crap moments and meh moments...and a million other moments. I try to embrace them for what they are, not give extended influence to any one, and then move along. I try.
I also try to tip the happiness balance in my favor by
...spending time in the company of funny, smart, and kind people whenever possible.
...expending as little energy as possible on walking, talking black holes.
...carving out something for myself that keeps my brain active and forces me to create.
...knowing that every rough patch is just a string of crap moments, as fleeting as any other. Nothing crap can stay either, Ponyboy.
There's my bright side for you.