You need self discipline.Try this to improve your concentration powers. Start slow, only 1mt a day for a week then progress till you reach 5 mts at a stretch.Don’t do it after meals.
In a darkened room, sit cross legged or in any position you are very comfortable in, on the floor. Place a candle on a stool in front of you so that the flame is in a straight line with your eyes.
Without blinking and while breathing very slowly keep staring at the flame. Don’t let any thoughts enter your head at all.After a minute is up close your eyes . You will still be able to see a revolving flame behind your eyelids. With full concentration keep on looking at it. If your concentration falls the flame will disappear.
This is a very good exercise to build concentration and self discipline.
Be conscious even in your daily life and try to not procrastinate. The second you enter the home don’t throw things around but make an effort to put things in their place.Do not put away for tomorrow what has to be done today just because there is no deadline. Keep on reminding this to yourself.