Yes, it is a very fine line in regards to “how much am I comfortable putting into a trade/investment?”, but as you are about to see, there is also a point where to the outside observer it becomes very clear that too much money has been invested. If you are in a position, whether that be for a trade or investment, and you are finding yourself doing/thinking some of the things this person is, take it as a sign that you are risking more money than you’re actually willing to lose.