Time count hacks

Always make a time count. Then try to get it half. If not possible atleast 20% less. Later with different techniques you may try to get it lower.

However what you estimate in guessing, put double time in schedule and when actually doing it try to half it. Grdually halfving you will come to an optimum. Then you may try to find smarter way. As life is short, trying to halving the optimum will provide diminishing improvement.