"Never compare your start to someone else's finish."
When I'm starting out something new (like a blog, or digital painting for instance) it's hard not to compare myself to others who have more people reading their blog, or who are extremely talented artists and feel a bit jealous.
But then I snap out of it and realize that these people probably have put in a lot more time and practice to get to where they are today. I think that talent and luck also play a role, but I don't think great things can be accomplished without putting in the time.
It's easier to stay motivated and excited about new projects when I keep this saying in mind. What works for you when you start to compare yourself to others?