What is always worth it?

Telling people important to you that you love them

Couldn't agree more

A good night's sleep.

Not good at this one
- 3:53 am over here
I used to get a good night's sleep regularly, and now I have cats, so that's right out the window. Those pesky chaps want to play at 4AM. But they are cute.
I agree, this is very important to me. My fiancee and I have come to the realization that sleeping in the same bed made both of us sleep worse. The solution was to sleep in separate beds and it's been great. I do miss some parts of it, of course, but the benefits have been worth it
- My 2yo son sleeps ON TOP OF ME
- This is so underrated. Sleeping together brings relational benefits. Sleeping apart improves your overal mood due to better sleep, which has even bigger relational benefits :)

I'm gonna go with something simple, pizza. It always always makes my day better, no matter what is going on in my life or what I'm feeling.

It's also good when you don't want to poop for three days.
Spoken like a wise individual

A proper backup strategy.

Including testing that you can actually restore from your backups.

If you don't test your backups, you don't have backups

Doing small joyful things. Like enjoying nice sunlight, smell of fresh cut lawn, that cool looking cloud, first sip of water in the morning, and every little thing that makes up the experience of you. Once you start appreciating small things, you start to see they are plentiful and makes day nicer, and build up different mindset to follow :)

Learning about healthy eating and exercise.

I know all about those, but it doesn't stop me eating crisps and sitting on my arse
Shh no
That can be depressing as hell depending on your mindset of the day, so not "Always" worth-it

Investing in your health.

Not caring about things out of your control. Life's short enough as it is. Feeling burdened through it is just dying not living.

Taking your laundry out on time so it doesn't smell like an orc spawnpool

Trying.

I know it sounds cliché and... Well... Wanky, but it's true.

Trying and failing will always feel better than just giving up.

Like someone? Say something. They could humilate you and literally kick you in the balls and in 5 years i guarantee you'll regret it less than if you say nothing. (This is not an excuse to be creepy. If they say NO, then hear the NO. Shit happens. Move on.)

Have an idea for something cool? Try to make it reality. The sad truth is, honestly it's probably going to fail, but at least you will be able to say you tried.

And that 1 fucking time I'm wrong... My god, that 1 time. That's where the best that life has to offer exists. But first...

You have to try...

So ask yourself, really. What's the worst that could happen? ... Aaaand now ask yourself... What's the best that could happen?

But if you ask yourself "what's the worst that could happen?" you must realize that sometimes trying is NOT worth it.

Like this guy, for example:

https://en.m.wikipedia.org/wiki/Franz_Reichelt

https://youtu.be/MDUYPrKKM5M
- Jesus. Weigh the pro's and con's of course.
  
  I was thinking more, start that business, or start that college course. Don't fucking jump off the Eiffel Tower in and bundle of blankets.
  
  Does that really need to be said?

A higher-quality tool. Buy the cheapest-made one and it'll break shortly, buy the medium one and you'll be set for a while, buy the best one and you'll really be set.

Despite this I still buy the occasional dollar-store tool because it's nice to have extras around just in case they come in handy.

My rule is to buy the cheap ones first, then if it breaks, I know to buy the better/best set. I've saved a ton cause there are plenty of tools I've only used like 3 times.
- Generally its a good idea to buy the cheapest gear possible when getting into a new hobby. That way if you lose interest there's not a lot lost, if you keep going you'll know what to appreciate when the time comes to upgrade.
I have a set of screwdrivers that I'm pretty sure came from the dollar store, and they're the favorite tool I have.

Used to work in IT and those screwdrivers disassembled many hundreds of computers, maybe over a thousand. They're magnetized just right too, so I can put a screw on the tip and place it with the tool instead of by hand. They're small, fit in your pocket, very convenient.
Still, the cheaper one is the right choice sometimes.