Sure, that could be a reason, but that's not OPs intention. He's trying to "save him from himself", which won't work if he can change the parameters instantly, as he wants to.
A hardware solution. Tell your wife or your mother what you plan to do then explain to them why you didn't do what you said you were going to do.
Ideally I would like to have a business plan agreed with a third party before start of each trading "cycle". It would say: you start with size X. If intraday account NLV reaches $Y, your max size is increased to Z, etc. You reach either the target for the cycle, or the loss limit, or the time limit (e.g. 3 months) and a new cycle starts. I do not want to involve my friends or family. Is any broker willing to sign a contract as explained above?
perhaps if you are big enough to have a private relationship. I can’t imagine a broker taking that kind of liability for a regular customer.
Does anyone like their risk manager? I've never been in a financial firm but at the factory, no likes the quality inspectors. Yet they are essential. And their personality is just like the cops - dry, detached, and not impressed with ANYONE'S performance! OP may need to join a firm where the office cop is always waiting and watching, getting ready to slash his position when the equity curve starts looking suspicious.