How long does it really take to get that (six pack, I assume.) you're aiming for? Well...
A six pack starts showing at 10% of your body fat, though, some people get it at 12, some at 7, it's not really pin pointed, everyone is different, after all. What would be 10%? If you weigh 100 pounds, you can only have 10 pounds of fat on you, otherwise, you won't have a defined six pack.
To safely lose weight, you only need to reduce your calorie intake by 20%, it is not healthy to go straight from fried chicken to only salad, even if it seems great.
To calculate bodyfat, you can't guess. There is a million of ways to calculate your body fat anything from a flotation tank (25,000$+) to weird looking scale machines which you can use for a dollar, what works best though (besides the flotation tank) is a skinfold caliper, and it only costs 15 dollars.
You might have heard about rules such as 'you should lose 2 pounds a week'. Unless you weigh over 300 pounds, this can lead to mal-nutrition, which is dangerous. Remember, try and reduce the calorie intake by 20%, this will keep you safe from mal-nutrition and burning muscle.
I'll soon be showing you how to calculate how many calories you need per day, and how to balance.
Do not forget to drink a lot of water, not underestimate sleeping properly, stop making common mistakes to become happier!