We should remember it everytime because then we cannot feel to think about negetivity and bad thoughts.The meaning of the word Parameshwara is the ruler of the whole universe.The omnipresent god knows everything.So if he can hear and see what wrongs we commit, we will be conscious to avoid the bad practises.So we cannot say lies, nor bad mouth a person, cannot think of bad ideas and thoughts.
The following sooktha (wise words) from Ishavasya upanishad cements the above said idea.
Om Isavasyamidam sarvam yatkiñca jagatyam jagat
tena tyaktena bhuñjitha ma grdhah kasyasvid dhanam
God resides in the entire universe and in all that has everpervading qualities in the universe.Consume what ever god has given for your comforts.But this wealth is not anyone's (belong to everyone) so do not wish to consume it with greed.