Correction: I don’t know if you know this website called TED, “Ideas worth spreading “, but I have just seen this speech, and I’ve found it's a great one to forward on and share with you if you are stressed.

I presume the sentence is referencing the "talk" videos from TED. This is what I've come up with. I don't know if you've watched a TED talk before, but I'd like to share one of the interesting videos with you. I've omitted the "before your stress time" part, as I'm not sure what you're referencing.

Correction: I don't know if you have heard of this website called "TED: Ideas Worth Spreading". I just saw an interesting video there, and I wanted to share it with you. (not sure what you mean here -- Take a look if you are stressed. // Take a look before you get too busy.) (The other answers are also good.)