Taking calculated risks in the market can be like pushing through a tough leg day - you gotta know when to go all in and when to hold back. Thinking of going long on a solid project, anyone have thoughts on this strategy?

just had a conversation with a friend about finance and stuff he told me that his dad once said dont take big loans and dont invest more than 20 percent of your money in something thats not really sure also he said theres some new way to borrow money from a system called defi anyone know about it