I've been reading and listening to Jocko Willink recently. He makes a lot of comparisons to war and business.
The competition is the enemy. (just go with it for the example)
If you are so focused on the enemy, comparing yourself, stressing, wishing you had what they had, feeling sorry for yourself, then what you didn't realize the whole time, while you spent that time comparing, they spent that time conquering.
If you don't go conquer someone else will.