THINK BEFORE YOU ACT.
Most times we preach taking action and just doing it but the truth must be told at some point. The truth is you must not just take action or risk but calculated actions and calculated risks.
Fighting battles and wining is good but fighting the right battles saves your energy, resources and time. Before you act, always think and ask, is this my battle? Is this the best use of my time, energy, and resources?
Thinking before you act involves two things; first time management which implies making best use of your time and doing what's necessary and important at the moment while you attend to less important stuffs later.
Thinking before you act also involves attention management which involves directing and channeling your attention towards the main goal while shutting off distractions and procrastination.
Think before you act. Don't just be busy, be productive. Don't just work, work smart.