First of all as an investor you ought to be focused and concentrate on your thing instead of looking at what others are doing but if you must look at what others are doing or saying even if they are not..., don't be drive by those things rather learn to be contented with what you have ( your capacity), if there is something great or interesting they are doing and you feel it can help you if you apply it your investment and you have what is required to carry out this then you can go ahead there is nothing wrong in doing this but don't allow other people's success or things to control you, be confident in yourself and know you must not be like others.
To be more specific, "all hands are not equal". Meaning we all at different financial level, so we shouldn't look at other investors and do whatever they do. Most of them can choose to risk an amount knowing full well they have suitable businesses and back up funds elsewhere to fill in the gap. It will be like they never lost anything. While there are some investors that will be affected drastically. At least I have come to realize that working at your pace and accumulating consistently is all that matters. You can keep investing while growing your income, it doesn't stops that.