With self-directed retirement account your investment options are virtually limitless and you can truly diversify your investment portfolio. 

The relationships I've been able to build have been priceless, the amount of reach I've gained through my writing feels limitless, and even a podcast that I didn't think all that much of going into all those years ago has become one my most recognizable pieces of content today.

It sounds like you are borrowing from an individual and in that case the options are limitless in terms of what kind of borrowing agreement you all come up with.  

The court of litigations may have its limitations but the court of public opinion is free and limitless.

There is limitless opportunity out there just waiting for you to call. 

To be honest, I currently have money at 10% (no points), but it's not limitless and I'm getting busy.

Or note investing.No matter what, you will need to educate yourself on another tool(s) for your toolbox of investing tricks.We live in a world of abundance; there's almost limitless ways we can make money if you educate yourself.

There's a "happy medium" to it, as you say, but both extremes (all cash and/or all debt...limitless debt) are both foolish. 

The unnecessary waste in our society is limitless.

Hello! I’m Amy, and I am just getting started as a Rental Property Investor!
Driven by a vision to unlock financial freedom for my family, I’m working on my strategic approach and keen eye for real estate investment...