Yes, PartsBox is (Electronic parts inventory & production:
https://partsbox.io/). Some key points I would have told my former self:
* Do not expect any kind of explosive growth, especially in B2B. Expect linear growth. Search for "slow SaaS ramp of death" for a pretty good description of what to expect.
* Marketing is a huge problem. If you look around, you will see lots of marketers talking about marketing. In. Short. Sentences. With. Deep. Meaning. But then you'll notice that they mostly talk about marketing marketing apps for marketers. Unless you are building apps that help marketers market, much of this advice will be useless. And the short sentences are annoying.
* Paid ads are a waste of money, though I heard that with 4-5 digit budgets you can make them work. I never could.
* It is extremely difficult to get a working SaaS business at price points below $20/month. If you look around, businesses with these price points are VC-sponsored and are burning through investor money. I would not start a sustainable SaaS with price points below $40/month.
* When thinking about pricing, remember about support. There is no such thing as "no support", every product needs it, and it costs time and money.
* It's hard. Everything is hard. And there is always too much to do.
* Anxiety eats at you. No matter how good you are at keeping it at bay (I was pretty good), it will eventually catch up with you. I still don't have a good solution to that.
* If you pick a good niche, you can live in a world with nice and smart customers. It's a good world!
* When planning, be careful to set goals based on realistic financial assumptions. If this is to be your full-time job, it needs to support your business (including all hardware and office costs), you (your salary, insurance, retirement savings) and your family. People tend to vastly underestimate how much revenue is needed, especially if their past experience is mostly living with parents or surviving on ramen as a college student.
* I would not trade this for a "normal" job, ever :-)