Apart from acquiring users/finding product market fit, what has been the toughest part of your founder journey so far?
Creating an operation that can scale faster than the input of my own time.
You mentioned the two main problems. Everything after that is easy sailing . Many of us are still struggling to solve the first two.
Exactly, finding something people want and then have them buy it is the main pain point of every business. The remaining part consists usually of technical things that, in a way or another, are easier to deal with. But I might add two additional points:
Finding developers and learning how to build a SaaS as a Non-Dev. Two things that I would have done differently now would be to get a full mockup/clickable UI done with an experienced UX person and also done a database/schema layout before starting. 20/20 hindsight. But given that a year and a bit ago I didn't know those terms or how to start I feel like I've come quite a ways.
Finding correct packaging and international shipping from India has been a logistical nightmare for us as of now.
Honestly, acquiring users is the problem and is tedious and tiring but nonetheless important. I think finding motivitation to update and improve your product is the second most difficult part.