It's not that you don't know what to write or that you have nothing to say. It's that you've forgotten how to be.
Spent too much life thinking not from your brain, but from a virtualized imagination of who you are. You aren't mostly thinking, you are mostly thinking what you are to others.
Somewhere along the way you stopped seeing and began being-seen. At first this wasn't a problem. It was just a new experience. But eventually it became a habit. A habit that became so deep that you were soon spending more time being seen that you were seeing. Fast forward to now, and you are the way you are.
You aren't boring. You don't have nothing to say. It's just that you aren't being you. If only you were to spend a moment seeing again, being again, then you wouldn't be able to help yourself. The ideas and thoughts would be bursting from within .
If you feel like you don't have anything to say, ponder whether you are even being you in the first place. Because if you aren't being you, if you are too busy imagining who you are to the world, then there will be no you to have anything to say.