Thanks, snoopy, I'll definitely use this for now. Do you know if the files you sent me (v3.02) still make enthusiasm harder to gain in general? The text describes each file and it doesn't say anything about slowing enthusiasm gain.

It says to delete the old three files:
tunaisfish_enthusiasmrate.package
tunaisfish_enthusiasmZharder.package
tunaisfish_enthusiasmtuning.package

If the v3.02 doesn't slow enthusiasm gain, then these files are the ones I'm looking for. I have all EPs and SPs. They should work, right?

I really want this mod, but the link isn't working. I've googled and it seems to be the only mod of its kind. If you know of others like it, please link me.

I want my sims to gain enthusiasm more slowly. I'd like it best if every sim gained enthusiasm at 3/4th the speed of elders. So if an unmodded elder gains the 1st point in 60 minutes, then with my perfect personalized mod any sim would gain the 1st point in 80 minutes.

Is there any way to do this myself using simPE?

If not, does any of you have tunaisafish's mod that you could send me?