A healthy lifestyle, is it possible? How?

Some parents teach their children to live in a healthy way. They make their kids eat fruits and vegetables. Fast food would be just for special occasions and sports or some kind of exercise would be highly necessary to keep them active, not just looking at the computer -thinking about these times-. I went for a jog to San Cristobal hill last weekend and I saw a family -mother, father, two kids and a baby- riding on bicycles, even with their baby in a little cart pulled by the father’s bike, I think that’s great.
I believe it is possible to have a healthy lifestyle, but I think it’s very important to be encouraged by parents, because the physical state has to be cultivated when we are young and now is too easy to prefer sedentary living ways, everything has become more comfortable, but it shows not good secondary effects. That’s why we need to be capable to make wholesome things seem -and be- pleasant. It’s usual to hear people talking unwillingly about exercise, but it is because they are not used to do it! First times doing exercises the body may be in pain and tired, but with patience it turns revitalizing -sometimes addictive, but that’s another issue-, just the opposite and great feeling. If it goes with a healthy way of eating is even better.
My mother always gave me varied meal in reasonable portions, but I don’t know how I get used to eat out of hour -not healthy food, by the way-. Physically, I was a bit overweight, so I remember doing exercises since a little kid; I think I started with step aerobics at seven, and then karate, later aerobox and now I use the climbing wall sometimes. But still I’m not so healthy, because I don’t organize my time well and when I get stressed, I start sinning with greed and I “don’t have time” to activate my body. There’s always time, the thing is get rid of the lack of willpower and start doing things efficiently. Being physically healthy really helps to be mentally better too. Doesn’t it sound good?