Do you write a diary?What you did throughout the day? I am sure you can remember most of the things that you did at the end of the day. There may be many interesting things, new experience, maybe bad or good. Maybe you met a person after a long time and shared many things with him. All these things are part of life. We all are used to it.
Now, do you write a diary to keep a note of all these things? The innermost feelings about anything are found in many of the diary entries. All of you must have heard about "The Diary of a Young Girl'. It was the diary entries of Anne Frank. So many memories are attached with the diaries. It is just like an album, without the pictures. It can be helpful too to remind us how our thought process changes with time.
I remember, sometime during my childhood I used to maintain a diary. Though I never wrote any innermost feelings or future plans, I wrote only what I did throughout the day. It's really interesting to read something written by yourself long ago.