My food intake

I need to be honest when it comes to my weight and my food intake.  I am here to write that I am okay today, but I didn't always eat well.  I consume fat and carbs, but not enough calcium, fiber, and potassium. This does not equal to a healthy diet.  I would like to eat fish, apples, and other healthy foods more so than oatmeal pies and peanut butter.  How do I change my eating habits?  That is really hard to do for me, but at least I don't wish to try anymore.  I don't wish to try it, I will do it.  Today is a day of encouragement and motivation.