Longevity of spell to influence thoughts/emotions

Say for example I called upon an entity/demon to manipulate someone into seeing me in a positive light and offered a reward.

Few days go by and I get my result, thank the entity, give the reward and burn the sigil

Will the effect then wear off the individual as the request was fulfilled?

Is there a way to have a lasting spell upon someone to see you in a certain way…weeks, months, YEARS?