Yeah, I was asking myself a few years ago, 'Will I ever be able to be happy?' and then a few months or years later, I was... (combination of nutrition and lifestyle changes too) It's still up and down somewhat, I call it being bipolar-ish (though I haven't been 'officially' diagnosed and don't believe in labels that much...)
I believe the only way to truly be happy is to expand the 'zone' and do things that scare you somewhat (as long as they're still okay for you, healthy etc) You may be afraid of it and feel anxiety, and *after* you do it, you feel happy... So it's a process, as 'scary things' change... At least that was my experience..
It's also good to not 'expect' to be happy, just take each day and each challenge as it comes.. (That's what the ACT books say too, interesting to read...)
People in the 'Western civilisation' have been too obsessed with 'happiness'... (and sometimes it has been counterproductive, some 'misery' and some discipline are usually needed to actually get some results or to grow and learn things, valuable life lessons..)
I maybe enjoy life 20%, but when I do, it can be VERY enjoyable, lol, so it's worth it...
Everyone is welcome at this forum, those who have overcome life lessons can give valuable different perspectives and share what helped... It's usually not 'all or nothing', very few people are 100% happy 'all the time', we can all learn from each other... sa can also be very different, some have general sa or only in very specific circumstances...