A few people are saying that they are most productive by starting their day on a big problem. I am the opposite of this. I try to tackle a small problem or two

A few people are saying that they are most productive by starting their day on a big problem. I am the opposite of this. I try to tackle a small problem or two in the morning in order to improve my mental state. If I'm able to get things done quickly, then it sets the tone for the rest of the day.