Let’s say one day you get up and say “I want to be more healthy”. You decide that I will start having apples everyday. You do it everyday for months keeping all your old habits of sleeping late, eating junk food, drinking alcohol,smoking etc.
Do you think having all these habits and eating an apple a day will keep doctor away?
Definitely NO.
And after a while you might even get disappointed and frustrated, and you will decide to stop eating apples claiming that “a healthy lifestyle simply doesn’t work for you” or “eating apples is not really helping you”.