Don't give up! I've been open 18 months and am only just now busy enough to not have to stress over keeping the place running, litterally in the last few weeks business has been good enough for me to know I've done right to keep going, Xmas was a little quieter than last year for me and that did make me doubt myself.
Can you lower any of your outgoings? Look at EVERY outgoing you have & maybe reNegotiate rent with your landlord?
Market yourself differently? I.e write a list of everything you can do to make money, then list every possible type of person that would purchase each service, then work out where they hang out and where they shop etc and target each group individually.
Give money off to every customer that refers a friend I usually do £5 off the new customer always spends enough to cover my loss
Rent out to self employed people, if your salon has space for more than one therapist get a self employed person in, be it hair or nails or beauty put them on weekly rent and you'll guarantee yourself an income every week.
As a new business owner you probably won't be taking a wage for a very long time, but imo as long as the bills on the shop are paid and I'm breaking even that's good enough for me.
Do you use facebook? I ask clients to put up a selfie and tag me, it's free marketing and reaches a huge audience in your area.
How big are your outgoings currently? Maybe if rent is really high could you relocate? Also the budget yesterday said they were cutting out business rates for a lot of places so that may benefit you soon if your rates are high?