When I first started as an Indie Hacker, my goal was to earn $100/day.
Everything that I did was to achieve that goal. I reached that goal after 6 months and I increased my goal to $200/day. I reached that goal a year back, now my current goal is $300/day. This might look small sometimes and easy to achieve but it's not and when you get small wins, you move to a bigger goal all the while maintaining the momentum and enthusiasm.
On the flips side, if I had set my goal to $10K/month, it would seem very big and I might have given up very early (Actually I wouldn't because I quit my job 😅 and hate 9 to 5 job). A lot of people might not see any gratification anytime soon with big goals. Its always good to set small realistic goals which will ultimately make you a successful maker in the long run.