Oddly enough I still use index cards for writing down my todo lists.  I have a box separated into Today&#x2F;Tomorrow&#x2F;Sometime&#x2F;Done, then write down ideas and tasks as they come to me.  Pick a few from the box and do them each day.<p>It seems strangely simplistic for a computer guy - compared to big full featured apps like Asana or Trello at least, but I find it so much easier to keep track of actual physical information as opposed to digital.  ie. If I need to make a note of a task and keep it with me all day, I just stick the card in my pocket and it&#x27;s there everytime.  No need to remember to unlock my phone -&gt; open an app -&gt; check my todo list -&gt; etc...