The faith of a mustard seed

I've discovered that the size of a mustard seed is proportional to the amount of uncertainty in one's future. For me, right now, that mustard seed seems to be the size of Jupiter. I just can't seem to garner enough faith.

I tell myself all the right things. I have others similarly encouraging me, and I'm grateful for that. Even still, doubt lingers around every corner. You see, no matter what scripture teaches me, no matter what other say to encourage me, I still have my own record. That record shows me too many times failed, too many poor decisions, too many times when my wisdom was proven to be folly. God is great, but is He big enough to save me from myself? That's what I wonder.