Idioms are a useful way for English speakers to express what they want to say without actually saying it. Of course that makes them hard for non-native speakers to understand, and even harder for them to use correctly. Let me help you out with this one.
Out of sight, out of mind
This is one of my favourite idioms, and I definitely use it a lot in my day-to-day life. This idiom means that if you can’t see something, you won’t think about it. This is especially useful when you’re trying to forget something, or to resist doing something. Check out my examples below.
I don’t like to use my phone when I study because it’s a distraction, so I usually put it in another room. Out of sight, out of mind.
I love chocolate, but I don’t want to eat too much in one day. I usually eat half a bar, then put it in the cupboard. Out of sight, out of mind.
I deleted my ex-boyfriend from Facebook so I don’t think about him. Out of sight, out of mind.