Sell long term stocks?

I bought NVDA at $80 in a Roth IRA. I intended it to be a long term hold as I am 7 -12 yrs from retirement. Do I sell part of it and place it in a defensive/dividend paying company? I know how to lose money but not sure what to do when winning $NVIDIA (NVDA.US)$ $Direxion Daily Semiconductor Bull 3x Shares ETF (SOXL.US)$