Really need help and motivation :(

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I'm 18 years old and my sister and I have been trying to lose weight for ages. I'm 60 kg, I'm happy with my weight, but I've got a bulging belly. I want to get rid of my belly and my love handles. It's so pressurising when my friends are really skinny and pretty much most of my relatives are really skinny as well. I just want to lose weight the healthy way and I want to feel confident! Can anyone tell me how long it would averagely take for me to get rid of my bulging belly? I know it takes patience and time but i'm willing to do it! I want to lose weight for the last time. PLEASE...HELP ME :(