Private Student loans?

I have 3 separate signature loans with Sallie Mae, roughly 40,000 total....in 4 months I run out of forebearance...my credit is not the best, probably poor by now...I have no ability to get a co-signer to consollidate them...and, I have no ests ( i.e. stocks, 401K, savings, house, etc), or a full time job right now...only working various gigs when they come in...what to do? I guess just let them go...that's all I can do...until something happens were I'm making a great deal of money..