Don’t take your friend for granted.
Don’t just assume that your friend will be there for you when you need them if you don't regularly keep in contact. Cherish your friendships and be there for your friends during the ups and the downs.
If your friend is going through a tough time and is irritable or grumpy, it's important that you're there to talk to them instead of avoiding them until they feel better.
When you see your friend regularly, you can easily fall into a routine and not acknowledge how much you care for them.
Don't talk badly about your friend to other people.
If you are a genuine friend, you won't talk badly about your friend and you won't share their private information with other people. Stick up for your friend when other people are talking poorly about them. Don't spread rumors and keep personal things to yourself.
For instance, if someone is speaking badly about your friend you can say something like, "I don't agree with you at all. Sally is a great person and she wouldn't do anything to hurt someone intentionally."
Apologize when you make a mistake.
Be willing to reach out to your friend and apologize for your behavior. Try to explain your reasoning, even it makes you feel vulnerable. Reach out and contact them, rather than waiting for them to reach out to you.
You can say something like, “Hey, I’m really sorry I dropped the ball on making reservations. I was so overwhelmed with work recently that it totally slipped my mind.”
Limit your expectations and don’t make assumptions.
Everyone makes mistakes and it’s important to manage your expectations so that you don’t feel let down when your friend makes a mistake. If your friend lets you down, have an honest conversation with them rather than berating them or being angry at them.
For instance, if your friend forgot your birthday, you could say something like, “I expected a call from you for my birthday. I’m not mad, but it did bum me out.”