When you are trading with someone elses money, there is either an added stress or maybe you are even more free because you just do not care.
I mean trading someone elses' money should be a little bit more freeing because in the end they did trusted you and that means you must be decent, if they trusted you wrongly and you are not good at all and they are just idiots to trust you with their money, that is their problem and not yours. You should just trade however you want with it and do whatever you want with that money.
This is a funny concept, if you are trading with someone else's money then you do not owe the responsibility of dealing those, if that is the case then you cannot be trusted to manage any funds. There are fund houses who deal with others investment and those responsible for the money will invest by studying about the market extensively and with the experience they acquired and not experimenting.