One of my favorite scriptures is Isaiah 43:18-19. 

Forget the former things; do not dwell on the past.

See, I am doing a new thing!

Now it springs up; do you not perceive it?

I admit. Sometimes when God is up to doing something new in my life, I often have trouble perceiving it. Things block my vision...usually the former things—past issues, lingering hurts, previous failures.

Obviously God knows me well. I think that must be why he specifically told us not to dwell on the past.

What about you? What tends to obstruct your vision the most? Things, people or circumstances? Why?