Endorsing oneself is like giving your self a pat on the back. If you do this for every you do, (well almost everything). If you are feeling blue and don't want to get out of bed just put your feet on you floor knowing that you can always lie back down if you want. Then endorse yourself for making that small step. Then if you go back to bed do not blame yourself. Just keep endorsing for getting your feet on the floor. If you get up endorse, brrush your teeth, all the small acts you do. Keep telling yourself that you are doing great especially when you didn't want do anything in the first place
Remember that we spend most of our time thinking negatively about ourseles. Think of what would happen if do the opposite!