boost v., n.

1. to make sth increase, or become better or more successful

2. something that helps or encourages sb/sth

1.  to boost exports / profits
The movie helped boost her screen career.
to boost sb’s confidence / morale
Getting that job did a lot to boost his ego (= make him feel more confident).

2. a great / tremendous / welcome boost
The tax cuts will give a much needed boost to the economy.