Very close - you have two options here:
"I've always said" or "I always say".
"I've always said" is if you're saying "This is something I have said throughout my whole life, perhaps you want to emphasise how old you are, or that this has always been your life philosophy since you were a child. The tone of this is a bit more like someone giving advice to someone else.
"I always say" is more about general philosophy which you currently live by. The tone here is a bit more neutral, so we know you're only talking about yourself/your opinion, though it could also be used as a way to give advice.
In other words, the difference is very small - but you have to choose one or the other.