I wonder what would have happened had David (being the newly annointed King) sat around saying, "I'll wait on Jehovah", while Saul was trying to kill him? ... Interesting
If everybody in the Biblical record just sat around "waiting on Jehovah", there would be no Biblical record of anything.
Personally, I always thought it was I'm "waiting on Jehovah's promise" to ultimately be fullfilled...until then I will continue on with my life doing the best that I can.
"Waiting on Jehovah" as used by JW(s) amounts to sheer and utter laziness....it basically means I shall make absolutely no effort to deal with this issue whatsoever.
Sad.