When a goal is set and is given a specific end date, how do you not feel in a hurry to get there?

I understand that if you feel in a hurry it’s because you think that it’s better there compared to here, or you will feel better when reaching the goal. However it seems no matter the goal, once a date is attached, I still feel the rush that I have to get it done in that time frame.

I have lengthened my timelines but I don’t take the goal as seriously or feel the need to work on it as much. Perhaps I like working under pressure?