Journaling is always an excellent method to monitor progress. Get into the habit of regularly making entries--write down your feelings, build your confidence, increase self-awareness and watch your self-image grow in positivity.
Record your reactions to key events in your life. As yourself questions such as, "What did I tell myself about this?", "How would an optimist explain this situation?", "What am I grateful for today?", "What did I worry about today?", "What was today's break-through?" You might be interested in downloading this Diary and making the adjustments that you want.
With gratitude, I base this blog on the book "Learn to be an Optimist: A Practical Guide to Achieving Happiness" by Lucy MacDonald, a Quebec-based motivational speaker with an academic background in psychology and counseling.