For me, the phone and laptop are full of online productivity killers like HN and Reddit. Staying off them is a struggle. With a pen in hand and work notebook open, there is no urge to do anything but work with it.
Other than that I just note all to-do's with checkboxes and write short notes, sometimes I work out a project idea into a larger plan. I number the to-do's to see if that becomes useful some day, and to force me to consider how old some of them are.
On Mondays I review the last week and the first Monday of the month I do a thorough review of the last, deciding if each unchecked item is still relevant and moving the ones that are over to this month.
Other than that I just note all to-do's with checkboxes and write short notes, sometimes I work out a project idea into a larger plan. I number the to-do's to see if that becomes useful some day, and to force me to consider how old some of them are.
On Mondays I review the last week and the first Monday of the month I do a thorough review of the last, deciding if each unchecked item is still relevant and moving the ones that are over to this month.
But the first point is the most important.