That's what I'm terrified of. Was my previous success purely just based on luck and I don't have what it takes to have business born from my creativity?

Putting aside luck, unless your startup is in a space that’s currently hot, like generative AI, that overall market for startups and economies in general have declined significantly recently. Said another way, assuming all things are equal, you would need more luck/skill today than you would have needed in the past. In fact, if for example, prior startup was in a niche that’s significantly declined, for example crypto currency, yiu would need substantially more luck/skill today than in the recent past.

What if you were a down & out blues musician and all you had left was your creativity?

It doesn't make very much difference what you do, it's going to take 5 to 10 years just to get back on your feet enough to even consider the opportunities ordinary people have the whole time they are less unfortunate.

So it's a toss-up, you can use your creativity very heavily and allow it to direct your rise, OTOH you could drop everything and gravitate toward something different that might be more promising once the difficult-survival period has beeen overcome.

It can look a lot different when you consider the points of view taking action for survival purposes versus to achieve prosperity.

If you're going to survive on your creativity, you may need to double down on both the survival activites and the creativity.

If not, you may need to become stabilized or even prosperous in some other way before you can indulge very much creativity in the long run.

There can be quite a valley between those two extremes.