Few years? Why not. If the stock goes up 20% a year for the next few years you got 200, but I would not focus on 200. Focus in on when to sell a portion of TM, because TM's stock will dip from time too time. Take your profits, then wait for the dip in its price. I think looking at 200 is the wrong plan.
I did the samething too, don't beat yourself up over it. Let's say he was wrong and it went to 140 and you sold at 130, then you would beat yourself up for missing the move and losing money. TM should be seen as a long term hold, but not in the old way of buy and hold. TM stabilizes my portfolio somewhat.