First thing is to cut out regret and lament. That only saps energy and makes us feel increasingly underconfident and eventually give up effort.
Next is to make Krishna a friend and treat him like a living being. How do you relate with a friend? You share everything with him. When you go out you take him along. In case you go somewhere you let him know and stay connected. Offer all your activities and actions to the Mother and Sri Aurobindo wherever you may be going and whatever you may be doing. As for Krishna take him along wherever you go as a bosom friend. Write a daily diary to the Mother and remember Her first thing in the morning and last thing at night and as often as you can.
You will slowly see the difference.
Affectionately,
Alok Da