What do you mean by long term happiness?

Is it a sense that everything is on the up and up, or just even keeled? Is it a belief that you are, at this moment, where you should be? Is it a retinue of loving friends and family who truly see you for the person you are and still love you? Is it a lack of worry about global or personal conditions, or the faith that those will be worked out?

A constant, unflagging upward trajectory of achievement, sociability, and unique and meaningful experience gathering is simply impossible, and drugs will not grant you more than shallow flashes in the pan in between long stretches of pain and drudgery.

You can’t face the enormity of the world and your life head on, your consciousness and awareness aren’t nearly big enough for that, so focus on the here and now and the hazy near future. Question what makes you feel happy, what experiences or people grant you value, and focus on those.

Happiness is irrelevant. You do what you need to do your duty to support yourself and your family first, then your fellow man second.

Honestly like any emotion, happiness comes and goes, it’s not something static or permanent. I know a lot of people want to achieve lifelong happiness, but I think it’s futile since emotions are always fleeting and come back around. I think what those people seek isn’t “happiness” but satisfaction with life.

Sure. Happiness is something you need to curate, and it's a state of mind. Lowered expectations can help. I don't need a huge house and expensive cars and lots of material possessions. That is just more to maintain and pay for.

If I have my health and my family and friends are reasonably healthy/happy and I have free time to spend as I please, I'm happy. I try to play as much as I work, that's the balance that works for me.

when everything's super...

Yes, fulfillment, stability, and a healthy social life

Yes. Many religious people including myself feel happy. That's one method.

Others find a purpose in their life to drive toward or dedicate themselves to. Be it art, friends, family, work, learning etc.

I would suggest looking at what you want from life, and asking yourself what the first step is to achieving that. I find that I'm at my happiest when I'm keeping on track with my goals.