Most just get shit on and the reward is more work.
My day job is boring policy and process. It ends at a fixed time and I get to eat on the daily.
My side gig is dynamic, challenging as fuck, rewarding in spades, absolutely not guaranteed as I’ve been in danger of the work drying up and the contract ending for 22 years.
The reward to good work is more work, but make sure you can eat and sleep and live.