When working on improving yourself, it is easy to become discouraged because you do not see sufficient progress. Keep trying and do not give up. Every small amount of improvement is a success. (Rabbi Reuven Dessler; Tnuas Hamussar, vol.5, p.174)

Learn to appreciate even the most minute improvement. If you become angry one time less than before or with less intensity, that itself is improvement. If you speak a little kinder to others, that is improvement. If your prayers are ever so slightly improved, that is improvement. The more pleasure you feel with each drop of improvement, the more likely you will keep trying to improve.