Headspace: Guided Meditation and Mindfulness
There are lots of apps on meditation and mindfulness, but the one that I have found the easiest to get into a habit with is Headspace.
I found some other apps quite difficult to start due to the long silences (I know this is the point of meditation). But when starting I found it useful to be guided along what I was meant to be thinking. Headspace seems to prompt me at just the right moment where my mind starts to wander.
Give it a try - the first 10 days are free: