As long as you've all it takes to be aggressive in your Bitcoin acumulation there's nothing to worry about, you don't have to be aggressive when you know you can't afford to be, besides being an aggressive investor requires a preparation, you got have a steady income flow an increased one as such, I personally frown at this idea of not investing the amount you can't afford to lose in Bitcoin, I see this as an old school idea though I might have also made this statement which I can't remember when but I believe as an investor you should weigh your options before investing in any asset, I think that's what makes you a good strategist, Bitcoin is an asset which we all know as such when anyone is investing in asset such persons should not expect returns immediately unless you aren't ready to go through those things that will school you through the whole process of graduating to the profit stage in the future.

Buddy you can only advise someone to invest with the amount he or she can afford to continually invest with consistently to avoid tampering their existing portfolio but as for losing, I don't think anyone is losing anything as I assume that we are all in for long-term, the people that can emphasize on losses are traders which I believe we know what they are into but as for real bitcoiners, they only thing that can happen to your Bitcoin hodlings is depreciation in the price which is as a resulting force coming from volatility that causes dip but the value remains the same, this same fluntuation or volatility whichever name you choose to call it can also favour upsurge at anytime, for me it is Bitcoin accumulation at all time not minding the market status that matters, however, it should be done at ease without pressure of investing more than your pucket can carry.