You feel good about your ability to create project estimates. You are handy with a spreadsheet, understand the calculations, and enjoy the research. Your estimating challenges are not about all of that. Your challenges come from a condition known as ‘estimating while being human.’
There are some things we do or expectations that we encounter that leads us to do silly things with time and budget estimates. If we are going to do better, we first need to acknowledge the real issues. Then we can begin to create solutions.