How can I decide when it's worth it to spend money to save time?
I found out that I'm a person who likes to do many things self but I found out that many people don't think like this. They usually choose more efficient way and delegate the task to somebody else and pay him for his service. The tasks can be various - programming, house repair, administrative tasks, bicycle or car repair, scanning of a book, whatever
How do you determine the boundary if it's more efficient to delegate the task to some professional who takes some of my resources (usually money) or that my knowledge, time etc. is sufficient and it's better to do it myself?
Is there some literature on this? Are there some equations evaluating factors and deciding between "do it yourself" or "delegate"?