Argh!

i need inspiration on how to loose weight.
i know your probs going to say .
. eat less
. do more exercise
. eat healthier

but i need to loose 2 stone in order to feel hap with myself, im 18 adn 5'6" and i think im nearing on 11st
i do not enjoy going to the gym as i feel intimidated there, i like swimming but am body concious(sp?) i have tried running but can not run for very long.

what have you found helps?
i have 7 months to loose the 2 stone before i go to Africa.. so am very determined to do it.

i find crisp are very addictive so need to give them up but the motivation is hard. i have also tried slimfast and adios to no avail

please please please help
thanks