Who's Side Am I On Anyway?

I'm into the first week of the online bible study for Unglued by Lysa Terkeurst and just finished reading chapter two on Wednesday. Just two chapters in and I've already discovered so many golden nuggets! From reading Lysa's account of her life moments and reading the comments of my bible study buddies, I know I am not alone in feeling "unglued" and that there is a better answer than duct tape!
When I discovered the reference to Joshua in Chapter two, I had instant joy. Joshua has always been a favorite book of mine. Several years ago while I was facing a major life decision and was seeking assurance after assurance and more assurance from God that I was taking the right path, He led me to Joshua 1:9 ("Have I not commanded you? Be strong and courageous. Do not be frightened, and do not be dismayed, for the Lord your God is with you wherever you go.”). What more could I ask for from God than that He be with me?But I digress.......
So I'm very familiar with the passage in Joshua that Lysa chose to illustrate the question "Who's side am I on?" But I had never viewed that passage in quite that way. I had always just took it as an assurance that God is always on the right side.I never turned it around on myself until now.
Who's side am I on? Do I switch sides if the going gets rough? Do I wait til the battle is over and the victor is clear before choosing a side? Do I fully trust God 100% with everything?
I reflected back on some incidents in my past and wasn't exactly proud of all my track record with trusting God. I start off 100% trusting God....or so I think. As time goes by and the situation hasn't been resolved in the way I thought, or the timing I thought, or the way I would have done it, I start to question myself as to whether I heard God right. Did He really say this or that? Did He say move or be still? So then I go back for more assurance (see paragraph 2) that I did get the right direction or instruction.
Even at all that I never connected not trusting God completely with not being on His side. In fact I find it appalling to think I was ever not on God's side. But now I can understand that being fully committed to being on God's side leads me to trusting Him 100% with all my heart at all times.
From chapter two "And if we ground ourselves in the reality that we trust God, we can face circumstances that are out of our control with out acting out of control. We can't always fix our circumstances, but we can fix our minds on God. We can do that." I like that. It reminds me once again that I should always fix my eyes on Christ..not on the raging storm. Everything in this world is temporary. The lasting constant is Christ. I have to keep that as my "true north". Everything else leads to chaos....to coming unglued.