The ego is often deeply involved in the desire to help others. If you do not want your ego to be involved in this way, do not be available for others unless you really want to be available. Do not feel that you should be available. Don't sacrifice yourself in any way. Don't go against your true feelings. Don't carry the cross for anyone else. Make sure that there's no sense that helping others makes you a better person or that it will gain you easy access into Heaven. Don't be a martyr.