People use the term "hustle" a lot, though it often means different things to different people.
"to put in a lot of time"
Good things take time, and I took a lot of time, so let's hope I did something good!
"work at a consistent pace"
I worked about as hard as I worked yesterday, so there hasn't been a decline...
"move quickly from place to place"
But the usage which is easiest to use and the most corrosive to anyone's psyche:
"in a hurry to figure out what to do"
It's easy to conflate nervousness, worry, anxiety, or just undecidedness, with working very hard: constantly thinking about a project, always evaluating different options, finding new pathways you may need to take one day.
"It's easy to conflate nervousness, worry, anxiety, or just undecidedness, with working very hard"
Unfortunately, making decisions about how to proceed doesn't count as work. That's why it feels so stupid when we spend two hours figuring out what to do only to realize we no longer have time to do it.
This video from Rich20Something does a great job of explaining how serious hustle can be and what can motivate that in anyone.