Proactive or Reactive?

No this isn't one of those comments about face wash!
One of the things I've been mulling over is the importance of being proactive in my thought life.  I know myself pretty well, having 30ish years of experience with myself.  I can you that I have, on PLENTY of occasions, been reactive with my thoughts.  What does that mean?  Here's an example:
I wake up, feeling tired and kind of "gray".  Nothing bad, but nothing good either.  A thought comes to mind, and there's just a hint of something in the content that makes me feel insecure.  I start to doubt myself, start to mosey into the land of "I'm not really valuable."  And bam.  My day goes south, I'm sad, and I'm probably going to cry.  A lot.
I do this with my identity, my worth, my skill set, my relationships, my health, and on and on it goes.
This is not the way I want to live, nor do I think God created me to be defeated.
Now, I would never really mentally tell myself "I sure am defeated in this area", and yet my life is lived out that way.  Bingo!  The way we live often tells a true story of our beliefs.
Bouncing back from defeat is hard.  And so the brilliant thought hits me: why don't I head it off before I get to that point?
Eh?
Yes!
Rather than being reactive in taking my thoughts captive and reminding myself of God's truths, I can take the initiative to do those things BEFORE I get defeated.
Rough patches will come, I am sure of it.  Yet it does not need to dominate my thinking.  I am a child of God.  I have been chosen at a high price and redeemed.  God has designed me with skills and empowered me with His Spirit.  I am made to worship Him with my ENTIRE LIFE.
I can choose to live like it ahead of time.  I don't want to wait until I NEED to remember this to bring it to the top of my mind.  I want to wake up and live each moment knowing that I'm God's and I'm living for Him, and what He says--even about me--is true!
What about you?