Optimist: day dreamer more elegantly spelled.

Day dreamer has pleasant thoughts about something he would prefer to be doing & fantasy while awake, especially of the fulfillment of wishes or hopes.Daydreaming normally has a negative connotation.

Depending on the way you use your daydreaming time, it can be either a positive or a negative way to spend some of your free time. Daydreaming can interfere with your inclination towards endeavour and may cause you to either slow down or stop completely for a matter of minutes.

The highest pleasure to be got out of freedom, and having nothing to do, is labor

The more you explain it, the more I don't understand it.

Goals are for realists, but dreams are for optimists.