Making lists, rereading them often, and rewriting them from time to time will help you to feel better about yourself. If you have a journal, you can write your lists there. If you don't, any piece of paper will do.
Make a list of —
*At least five of your strengths, for example, persistence, courage, friendliness, creativity.
*At least five things you admire about yourself, for example the way you have raised your children, your good relationship with your brother, or your spirituality.
*The five greatest achievements in your life so far, like recovering from a serious illness, graduating from high school, or learning to use a computer.
*At least 20 accomplishments - they can be as simple as learning to tie your shoes, to getting an advanced college degree.
*10 ways you can "treat" or reward yourself that don't include food and that don't cost anything, such as walking in woods, window-shopping, watching children playing on a playground, gazing at a baby's face or at a beautiful flower, or chatting with a friend.
*10 things you can do to make yourself laugh.
*10 things you could do to help someone else.
*10 things that you do that make you feel good about yourself.
(list from athealth.com)
If you don't have time to do all of them pick a couple and start from there. Maybe doing one a day for the week would work best for you.