My favorite approach is to use passive methods that will keep things going for me, like using crystal grids and playing MP3 files of mantra in the background during the day. I know it is better to take an active approach, but some days it is all I have time to do to set up these passive methods. A glass of water where it will be in the sun during the day to drink during the evening, for example. During the day I will watch for opportunities to sit for a few minutes to watch my breathing and to allow the tension from the momentum of the day to unwind. Frequent short sessions keep that momentum from building up the way it used to, and when I get the chance to really sit down and meditate my mind is a lot more responsive than it might otherwise me.