You are an important person and you deserve to take some time for yourself. Take baby steps if necessary. Go for a walk. go to the library, go to thrift stores. Invite someone over for tea or coffee. Read a real good book. Have a facial, get a manicure or a pedicure. Get a new hairstyle. Think of something that makes you happy and just do it. Try to remember that you are not selfish just because you do something for yourself. You will be glad you did.