If you get sidetracked, you stop doing what you should be doing and start doing something else.
Being sidetracked can make people feel like they are not focused or not getting things done.
Examples:
I got sidetracked and forgot to finish my homework.
She always gets sidetracked when she's supposed to be cleaning her room.
The boy was sidetracked by a shiny toy.
I was supposed to be studying, but I got sidetracked by a funny video.
I got so sidetracked by the game that I forgot to eat dinner.
He gets sidetracked easily, so he has to work very hard to stay focused.