My Mac is using a lot of ram.

Apple changed the way RAM works (unless RAM is being used, it is wasted), so while your memory pressure graphic is showing green, it is just fine. Nothing to worry about unless it is red.

Edit: Apparently, the "not showing the previous reply until a new post shows up" syndrom is back.

The number presented for Swap Used is a "High-Water mark" indicator (it never goes down again). That indicates that at some point since the last restart, you were so short of RAM that you needed to "simulate" 1.77GB on your boot drive.

A quick fix is a Restart, and closing a lot of your opened Browser windows as well. Most of the Top Memory users listed are Web site Browser windows, and you have more open that most folks could look at in an hour.

Think about committing some of those to BookMarks or Favorites, and closing their windows.

Here is a graph of memory pressure that has problems (see all the RED):

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All is working properly. You are worried over nothing.