Based on your financial expertise, provide your response or viewpoint on the given financial question or topic. The response format is open.

Does a disciplined stock investor stick with their original sell strategy, or stay in and make more?
One of things I've learned about trading on the stock market is not to let your emotions get to you. Greed and fear are among them. You may be overthinking. Why not keep it simple, if you think it can go up to $300 a share, put in a stop loss at $X amount where you would secure your invested money along with some gains. If it goes up, let it go up, if it doesn't well you got an exit.  Then if it goes up change your stop loss amount higher if you are feeling more optimistic about the stock.  And by the way, a disciplined investor would stick to their strategy but also have the smarts to rethink it on the fly such as in a situation like you are in. Just in my opinion anyway, but congrats on the gain! Some gains are better than none.