There are many things in life that are uncertain.
Your word shouldn’t be one of them.
If you tell someone you’re going to do something, by God, do it,
and don’t make them have to remind you.
Having to remind you puts people in an uncomfortable situation, which usually results in them not asking you to do what you said—even promised—to do. This puts a strain on relationships because it breaks trust. If your word loses meaning to those you know and love, you begin to also lose respect, which is hard to ever get back. It is a true loss even though many times it’s not on purpose.