same?

outrageousI always ready for any situation.

This is not a sentence. "I am always ready ....." is fine. Are present tense interchangeable with present perfect? I say "not" Each tense has its specific purpose and function; although " Mary has been a productive employee" has about the same core meaning as " Mary is always productive ".

I have always been ready for any situation.-- OK. Meaning = so far.
(X) I always ready for any situation.-- Not possible English.
I am always ready for any situation.-- OK. Meaning = any time.

I see one mistake in the second sentence:"I AM always ready for any situation."

I think that these two sentences are not interchangeable. First can mean that you've been ready before in the past, but now you're not. While the second means that you've always been and you still are ready for any kind of situation.

Visnja First can mean that you've been ready before in the past, but now you're not.

That's not true. If your boss asked you: I know you have wanted this position for a long time. If I promote you to be the district manager, are you ready for the challenges? You were so surprised and replied " I have always been ready!",
This means yo

I am sorry because I forgot to type am.
I get it .