It is achievable.
The idea is to not wear heels that are 6",you should wear heels that are enough to give a reasonable lift, to the foot. Width of a shoe is critical, women have forgotten that.The high heel needs to also be of substance, your foot needs that much support.So if you choose a heel the is not only high, but Thin! your on you way to serious pain.
Also do try to wear a covered toe shoe.But not pointed, it should be nicely round at the front....to allow you feet to not cramp.
There are plenty of wide - high heels on the market, you can Google that info.
A good high heel, needs to be very well made to support ones weight.
Your foot needs room to move, but not in a shoe that is also loose or tight.
It doesn't sound too glamorous, but it is a case of maths.To achieve not only a great elevation of the foot,with comfort to go all night.