Growing a company is in many ways similar to raising a child.
In parenting, you watch your child crawl, walk, and then run. You also watch them go through phases, tackle new problems, and come out the other side of their trials a changed (and hopefully) stronger person.
In growing a company, you watch the idea take form (and evolve), and you watch a plan and path unfold. You also watch your team grow and mature as they encounter problems and strategy pivots that (hopefully) result in a stronger company.
In my opinion, persistence despite discomfort is a master key to success. In other words, learn to be comfortable being uncomfortable.
Breakthroughs happen in response to challenge.
The only companies that don't have problems are the ones that no longer exist. The goal is to hope for better quality problems.