Here is the thing, happy is not something you should ever strive for. Happy feelings come when bad things stop. Happy is your upswing from the shit your normal life is. for most folks its just a random hit of brain chems, happy comes when unexpected good things happen. Hell yeah it feels good but it is not sustainable in all fact it Can Not be sustained.
Don't strive to be happy. When you make your goal happiness you are in fact making your goal to feel like shit most days. strive and seek satisfaction, that shit Can be sustained and feels damn good, the best part is due to the nature of "happy" you get the exact same amount as every other human without dredging thru all the shit.
it took me a lot to learn this. i was a trucker in iraq and afgan working hazmat in one recovery in the second. trucking is something of a bitch in the war zones you are moving 3 mph off road (the walking pace of the poor bastards who are using metal detectors to search for IED's). there where "days" where you would see the sun come up and down and up before you even moved due to some problem/death/life changing disability. other days you would be gunning it doing 50 mph down the side of a stoped convoy in uncleared land (read no one cleared it for mines/ied's) praying that you blow up and never have to face another moment of the stress, begging to god/satan(fucker owes you one anyway)/Buddha that someone mixed up the red (someone is going to die if they do not get help Now) and green (we are fine take your time) smoke grenades.
it took ungodly hours of siting in a space so small you cant move/stand where falling asleep at the wrong time mean a bomb under your buddy's back tire and intense moment of driving where being off a nothing on steering/accelerator/brake would mean the person sitting on top of your truck handling a automatic grenade launcher would die. siting there wanting to brake down and cry, shoot yourself, anything to get away from it. but doing any of them would put one of the people you cared about in your own current position.
find what makes you content. live that life. do not give a rats ass about what others think. Never cross a line you don't want to cross. Do Not hurt yourself to benefit others, especially if you care for them (would they want you to hurt yourself for the amount they benefit?) Do not push others to hurt themselves for you. but as it boils down as granny weatherewax once told me. "the only real sin is treating other people like things." if you can manage not to do that you will find something way better then happy. you will have a life that was worth the shit of the world. and when you die riddled with cancer you wont be wishing you had done anything different you may wish you had a bit more time for more of the same but hell when you do things right that's the way it should be.