make the most of

(idiomatic, transitive) To realise the maximal value, worth, or potential of (something); to derive as much benefit or profit from (something) as is possible.

Example: Ralph Waldo Emerson:
  Make the most of yourself, for that is all there is of you.
2011 Jan. 25, Les Roopanarine, “Wigan 1 - 2 Aston Villa”[1], BBC:
  But with the home side likewise unable to make the most of a period of first-half ascendancy, Villa were swift to make amends on the restart.