This app was mentioned in 1 comment, with an average of 3.00 upvotes
I seem to beat the dead horse in here with insight meditation. But take a look at these two links. May help.
http://www.mettainstitute.org/mettameditation.html
https://play.google.com/store/apps/details?id=com.hivebrain.andrewjohnson.confidence&hl=en