1) Aggressive one 2) Aggressive one, slang 3) Dynamo 4) Eager achiever 5) Eager beaver 6) Energetic one 7) One advancing rapidly 8) One with drive 9) Self-motivated sort 10) Super aggressive type 11) Trailblazer 12) Type-A personality 13) Young turk Found on https://www.crosswordclues.com/clue/go-getter