I highly recommend just keeping a diary of the correct size with an appropriately sized pen with you at all times. A Moleskine with a pen in it has served me well not that they're tools handed down from Heaven or anything. Whether they're emotioins, thoughts or passing fancies, writing has helped me. More emotional shit than anything else. I don't (re)read it much but just writing is an excellent way of getting self-awareness when it comes to emotions. Saying them would likley work near as well but writing is a great deal easier.