At a crossroads! Can anyone advise me?

[happyhappymummy]

Im a 34 year old single mum. My husband left almost 2 years ago. Since then I have been on a rollercoaster, trying so damn hard to build a future for me and my 3 daughters.
He doesnt emotionally support us. He does his bit every other weekend and pays a ridiculous amount of maintainaince (£9.98)
Im at a crossroads in my life right now and do NOT know which way to go.
I need to earn money. I dont have any qualifications or experience of anything as I have been a stay at home mum for many years.
I need a job with prospects. Is this possible at my age? I dont even know what I want to do. Im not academic.
I have an interview at college to do a level 3 hairdressing course as I did my level 2 before the children. My lone parent advisor has said there arnt any jobs out there. I need to know I can earn money to support my children.
Has anyone got any ideas what I could do? Where do I start? Who will employ me?
Im desperate, as my ex has stopped paying the mortgage and it looks like I will lose it if it doesnt sell quickly.
If I had a good job that paid well I could pay the mortgage and stay.
Im probably asking for a miracle here right?
I just dont know what else to do.

how old are your children?
would mobile hairdressing be an option?
not sure why you were advised there are no hairdressing jobs out there, people always need their hair cut!

Gumby thanks for your reply :) They are 16, 6 and 4. My youngest starts school this sept. The lady at the job centre also said when my youngest turned 5 my income support stops. I was in shock on the phone and said oh ok so I will have no money to live off and she said your tax credits, it wasnt until I got home looked on the net and realised yes income support stops and is replaced by another benefit. I cant understand why she didnt explain that bit.
I want to work so much. When my husband left I didnt want it to stop me from doing what I wanted to do but its been an up hill struggle. I just need that break Im willing to put in my all on all levels to work and provide and just give my children a normal life. Im struggling right now.
Sorry Im waffling just dont know where to turn, its quite scarey on your own.
Mobile is where the money is but I would have to work in a salon to build a clientel. I would love to teach it one day but it just feels way out of reach for me.