The hardest thing...

Is it just me, or do other writers have problems getting in to scenes? As in, finding the right words to get the thing in motion, bridge from the last thing and into the next, mark the passage of time or just plain get the reader into the tortured thinking of the central character? I think I spend more time on these jumping off platforms than anywhere else in the book.
Once I’ve climbed up there and looked at the teeny tiny pool I’m aiming for and taken a deep breath and funked it, walked back, breathed again, aimed again and jumped… then, I’m usually OK…after the odd second failure to jump, near miss or weird landing in a different pool altogether.

But getting up there, leaving everything else behind and knowing exactly what you’re aiming for in this next effort – that seems to be the hardest thing for me.

What’s the hardest process thing for the other writers out there? Other than sorting out strained metaphors in other people’s blogs, obviously.