They wouldn’t discourage you from investing in a 401k or a IRA.  

I know many that sweep their accounts when business is up and put it into multiple buckets while they can.Buckets like:- IRA accounts- Insurance Contracts- Family Trusts/Partnerships- Self-directed 401K’s- Health Savings AccountsAnd you don't necessarily need to own these buckets, sometimes control is better and safer than actual ownership.

I then rolled an old 401(k) into a self directed IRA and began to invest in my IRA. 

A lot of forum members are very knowledgeable in their respective fields related to real estate investing, whether that is real estate sales, wholesaling, flipping, rentals, lending, self-directed IRA and Solo 401k investing, or tax and legal guidance.Discounts on some products and services are offered to BP members: https://www.biggerpockets.com/perks/proIf you haven’t been to it already, you might want to check out the BP blog: https://www.biggerpockets.com/renewsblog/The site has quite a few tools that can be helpful for new members.

Cash and self directed IRA funds How did you add value to the deal?

If someone is borderline, but generally looking ok, I might ask if they have further documentation to get them over the hump...significant savings or IRA accounts, or prior year tax return to solidify their "online" business income.

@Ritu Gupta  The above are experts in the SD-IRA/solo k space. 

My IRA holds a lien on a doublewide in a park in Austin, TX.

My Self Directed Roth IRA will lend $60,000 and my Self Directed HSA will lend $50,000. 

A lot of forum members are very knowledgeable in their respective fields related to real estate investing, whether that is real estate sales, wholesaling, flipping, rentals, lending, self-directed IRA and Solo 401k investing, or tax and legal guidance.The site has quite a few tools that can be helpful for new members.