The Sims 4 once again allows you to shape your sims’ personalities with different traits. If you’ve found that you don’t like the traits you chose, though, there’s no easy way for you to change them. EA hasn’t made some sort of concoction for you to change your sims traits a regular way.
There are, however, other ways…
You can open up the cheat console by hitting CTRL+Shift+C and then typing “testingcheats on” (without the quotation marks). Hit enter and then type “cas.fulleditmode” (again without the quotations) and hit enter again. Hit ESC to close the cheat console, and you’ll be able to Shift+Click on any sim to edit anything about them in Create a Sim as though you were first making them.
Congratulations! Your boring ol’ sim will be all new!