Perfect advice we should always take

Don't love too soon.
Don't trust too fast.
Don't judge too soon.
Don't quit too early.
Don't expect too high.
Don't talk too much.
Here, Each & every lines starts from negative word i. e. don't, but still there is a overall positive outlook which focus the reality..!!

If you can do these all things you will be perfect person but you shouldn't forget nobody is perfect.
Sometimes you meet someone you truthly feel you can skip those rules as they are not nesessary at this very particular case. But what happens is you that hurt the other without even having intention to do this.