Acts 1 mission possible

You will receive power... and you shall be witnesses to me (Acts 1:8).
It's stated as fact. Not a command, not even a possibility, but real, actual. We have received power, enablement, the ability to act; the Holy Spirit has come and indwells every Christian. What do I do with this power of the the Living God who abides within me? I watch tv, fool around in the garage, work on the computer, watch the game, go for a walk...I have received power, but what do I do with it?
I am a witness to Him, but what sort, how much, how often, how effective, how intentional? Whether timid or bold, confusing or clear, I want to be more Christ's witness. Like Paul said in the end of Ephesians, let me speak the gospel boldly as I ought to speak. I'm cooped up in the church too much, let me get out and put myself in the path of people. Let me speak up more because people around me need to know Jesus as savior, and faith comes by hearing.
Could it be that God intends to save them, and He intends to use me as His witness?