There is no normal being that loves getting losses on business, career, investment and trades that's why even company holders make financial policies to keep record of investment and profits flows. And unlike other business bitcoin also makes sales and losses if you do not investment wisely....is nice when you put in what can not put you sickbed or gives you hypertension, don't invest out of what you cannot withstand the loss.
Is better to use small money or learn risk management first before investing especially newbies.
Using small money is great to learn the basic and to get the grasp on trading about the strategy and what to do/not and as the time progresses, you can definitely increase your investment capital by a little until you are confident with the knowledge you have. But still make sure to use the money you can afford to lose and not with your main savings, greediness is evil and you can definitely get trapped by that if you are careless with your savings and management.