Being selfless is all about making a sacrifice for another and putting aside your interests for theirs. It takes kindness and volunteering to allow yourself to include the comfort of others and create a positive atmosphere around you. It's okay to care more about the wants and needs of others before your own sometimes.
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Selfless Acts:
Listening to someone when they need someone to talk to
Sharing
Letting an elder go in front of you in line
Giving up your seat for a woman who is pregnant or someone who has trouble walking
What Selfless is Not
Selfless is not neglecting yourself and not caring about your needs and wants.
Make sure that when you are putting others first, that you are still cared for as well.