Okay.
1) Always look at the title of the puzzle. And if you're a regular solver always look at the setter. Generally, however much they try not to, they continue various traits through their puzzles.
2) So you've got 'mixed emotions', you've also got 6 entries without clues. So have a guess what's going to go into those entries. Not just one emotion, since the title indicates plural. And then those emotions are going to get mixed.
3) Of the clued entries : Across 8, 18. 24, 29, 34, 37 ; Down 1, 7, 9, 16, 19, 33 entries are entered after an emotion has been removed from the answer of the clue. Here's a starter : 18A answer is LIMEWATER, entry is LIMTER. What has been removed is AWE.
4) Later in your solving, you'll get some ideas, due to intersecting entries you've already made, as to some of the words that might make up the unclued entries. And this is part of the reason for my impatience with you. If you had properly read through the whole thread you would have understood this already.
5) Finally you will see that 2 emotions are left over. They are to be anagrammed for the 'Final answer'.
Good luck. Your last good president was Jefferson.