When we are led by the Spirit God sometimes asks us to do 'unpleasant' things - things which are contrary to our natural inclinations. That's one way of testing whether we are really being led 'by the Spirit' or just giving into a natural desire. I can well imagine someone thinking that "God has called me to do missionary work on a tropical island, to give up my life in the rat-race and to witness to people in the sun and surf" and being really convinced that they are "led" by God to do that because the 'call' keeps coming back again and again. However, if we're in a difficult situation, having to tough it out and facing despair, opposition and ridicule, then we may possibly be more inclined to want to ask God to lead us out of that situation when He may, in fact, have been the One Who led us into it.
"Surrendering" to God means doing the tough stuff He calls us to do. It means listening to Him and obeying even when what He calls us to do seems irrational or unpleasant.
I have found, through personal experience, that when I 'surrender' and follow where He leads me - even though it goes against my natural inclination - that ultimately the place to which He leads me is much better than I ever imagined, although the journey there may have some rocky moments. But if I hadn't stepped out in faith and obeyed I would never have known that.
Too many Christians mouth the words "Jesus is Lord" without stopping to think that Lordship means He has total control of our lives - Lordship is not a partnership. He rules - we surrender. But it's in surrendering that we find true freedom.