Everything in life is a Trade-off. Choosing to do one thing means not doing something else. The opportunity cost is never predictable nor limited. The options are infinite. Life is too short to even comprehend your choices.
“The price of anything is the amount of life you exchange for it” Henry David Thoreau
Time is not equal money, because you can always get more money. Time is priceless.
Strategic Quitting of things is sometimes better than grit.