The hottest current example is one that Democrats used for a confidence boost in 2004 as well: cellphones.
Why do some people have so much willpower, and how can we boost our own?
Once he sees that Kevin is willing to do the work, Mr. Collins offers him private lessons to boost his grades.
1815, literal and figurative, American English, of unknown origin. Related: Boosted; boosting. As a noun by 1825.