What’s the hardest part of growing a startup?

it's having to compete with companies that has already established their brand. you just have to keep on going bro and never give up because hard work pays off.

there are many things to keep in mind to grow your business, 1st and the most difficult part that I think is finding a perfect team, who can help you to grow, I call it first because a team can build your business and at the same time downgrade your business.

The hardest thing is the time frame between the investment and getting enough returns to pay all the operating expenses. In this time frame you have to maximise the performance in the least budget. Alzheimer’s Care Chandler

Just to add that it is very hard to find a startup mission, e.g. what is it actually been built for :)

I definitely agree with the first 100 users struggle! For me, the hardest part is to ensure the retention of those users

Convincing the Audience, i believe so!

To me marketing is the biggest challenge, especially if you're a technical profile.

Other than the legal stuff and the finances. I find it difficult to reach out to customers who are willing to buy the product

Previous comments about legal aspects, getting the first 100 users, and finding product-market fit are brilliant. I would only add the important and hard part that is building the right team.