First you need to show kindness and courtesy. Always consider the next persons position and feelings before reacting. Offering a seat to the elderly, crippled, or simply helping a child to cross the street is a simple act of kindness and courtesy.
Stand in a well-mannered position during a conversation: Always stand in a well-mannered position during a conversation (Ex:you are having a conversation with one of your friends ). Also maintain a eye contact as these two things are one of the important aspects of showing respect. These also tell how much you are interested in the conversation.
You need to have manners; to be respectful because manners are a part of being respectful. Good manners include not speaking unless spoken to, showing regard and concern for the elderly etc. Offering a guest something to eat or drink also reflects good manners and upbringing.
You should ask permission before using someone's property. If you don't, this can be considered as stealing. It is also considered rude and inconsiderate to help yourself freely to anything that does not belong to you.
Think before you speak. Always contemplate if your words are going to hurt someone. We sometimes tend to speak out of turn, which is entirely not a good thing to do.
Always use the basics: please, thank you, and so on. This forms a great part of being polite and at the same time helps create warmth and compassion.
Try to have respectful friends. Always remember we are judged by the company we keep.
Be respectful to others even if they're not respectful to you. Show patience and humility. The other person may learn something from you. This does not imply becoming a doormat.
The first step of being respected is respecting yourself. Be respectful to yourself, or others will not respect you or take advantage of you.
Never insult anyone or say something that may offend them. Even when angry, keep your hostility in check. You do not want to have regrets later, when the damage has already been done.
Do not insubordinate or disobey a figure of authority. Authority is there for a reason. We need to relish and feast on the wisdom of authority figures.