Does the emotional entrep rollercoaster ever end?

It hasn't ended for me with Indie Hackers, and I've been through many phases: ideation, validation, early planning, pre-launch, post-launch trough of sorrow, almost running out of money, hitting ramen profitability, an acquisition, and long sustained growth.

I think a lot of it is mindset, though. It's a lot more roller coasterish when I'm fixated on reaching some difficult-to-reach goal or outcome in a specific time frame. If I can relax about time constraints, or if I can focus on inputs rather than outputs (e.g. simply producing a good podcast episode or building a good feature), then things get steadier.

Of course, that's not always easy to do. For example, if you're running out of money in your bank account, things can look pretty dire.

That said, I think it's always possible to do. In the above example, you could say, "It's just fine if I run out of money! I'll get a part-time job and work on my business simultaneously until I no longer need the part-time job. I don't care if it takes many years to succeed. I'll just focus on enjoying the day-to-day work." Then you could hit your goal and remain stable, but it'll probably take you much longer.

TL;DR — Fast progress. Hitting a lofty goal. Total emotional stability. Pick two.

(Yes, there are probably some counterexamples who rapidly progressed toward an amazing achievement without any emotional turbulence whatsoever. But I'd bet they're rare enough as to be negligible.)

I think as long as you are starting something you’re on the ride. It only ends if you stop or exit the ride in some way.

This is why it usually takes someone with very high pain thresholds to do this. Its a constantly changing environment that will quickly change for better or worse.

But I think if you know this is going to happen and understand you wont sink to the bottom of the ocean that you’ll be able to understand and deal with it.

You only need to look at a very public example with Wework to see how things can quickly change. If you know it happens all the time and you’re not alone I think that’s a good part of the battle.