What lessons have you learnt over the last three weeks?

Over the past three weeks, I have learnt quite a few lessons. I have learnt, that making a plan of what you are going to do and sticking to it, helps to make sure that everything is done on time. Another lesson I have learnt, is that when you only have little time to complete a task, you must work quickly and efficiently. Another lesson I have learnt, is that when something goes wrong, you should have a back up.