Be in two minds about something/about doing something
Definition 1 of 1
Pro Tip 1/3Indecision Context
Use when you're struggling to pick between options and your feelings are split. 
I'm in two minds about buying the red or blue car.
Pro Tip 2/3Personal Conflict
Express personal conflict when a decision affects you emotionally or morally. 
He was in two minds about reporting his friend's wrongdoing.
Pro Tip 3/3Imminent Decisions
Often used when a decision needs to be made soon, increasing the sense of urgency. 
With the deadline tomorrow, I'm in two minds about submitting my work as is.