How to spot the difference between Strategy, Plan and Tactic

Remind yourself of this quote

“Everyone has a plan until they get punched in the mouth” - Mike Tyson

Strategy is the high-level decision or goal. Should I fight Mike Tyson?

Plan is the steps to achieve the strategy. How should I fight Mike Tyson?

Tactic refers to on-the-spot actions to deal with the immediate situations. When Mike Tyson hits me in the face, I should sway left.