I've been an avid journal-er since I was a wee girl of 9 1/2 and though over the years it's gone from documenting day to day life to more scribing what the Lord is doing in my life and prayer and things like that. And wow is it amazing. I am so thankful for the practice.
Today I have been looking back over the past year and seeing the prayers and thoughts that have come to fruition just in the past year; it is incredible. And reading over a period of time makes it easier to see what are fleeting ideas and what has been more consist. I'm finding things that I wrote once and forgot about that God has been faithful to fulfill. It gives me increased faith to believe that He will fulfill the ones that are left unanswered.
There are times (like last summer) that in my mind were so full of vision and direction and I look back and laugh because what I wrote seems so just the opposite. So the reality is though emotions can go up and down we can gain so much out of a season that we remember its value more than the actual moments! It's awesome.
If you don't journal; try it. SO much perspective can be gained!