If you do, you'll spend all of your time figuring out where you are with each of them and no time achieving them. Initially, it's better to start with only four or five goals that you can really concentrate on to maximize your results. Many people are like the man who almost became the dart champion of the world. His technique was to throw the darts first and draw the circles afterwards. He never became the champion because he could never throw a bullseye.
Many people have a go first and then decide how they have done after they know the result.
Make sure you don't. Map out your day. If they have nothing planned, no goals to achieve, then the first disturbance or interruption to their day will probably prevent them from achieving anything. They'll drift along doing some things and failing to do others. Generally, the things that they complete will be unimportant ones.