Firstly I would like to thank everyone for commenting, very much appreciated!!
I am trying to read through all posts and take information from each. I think the best option for me is to try to steer clear of sweets all together as like someone commented they cannot stop at 1.....I have the same problem. I never drink any kind of fruit juice or fizzy juice so that is not a problem, I have 1 cup of tea a day first thing in the morning with 1 teaspoon of raw sugar.
Is it bad for muscle growth if I under eat on fats? I only regularly fats from about 90g of Mundella Greek yogurt and about 20g of uncle Tobys traditional oats + a small amount of milk in my tea....so I suppose what I am asking is can I under eat on fats from dairy?
I wouldn't be too concerned with this. Fats from various sources play a pivotal role in your health, just make sure you mix up your sources. Don't be concerned with under eating fats from dairy - but if you're not eating much fat in general you might want to increase it from sources such as fish, nuts, and olive oils so long as it fits within your daily caloric intake and doesn't skew your other macros.
In reference to the example I gave before, if your alloted caloric intake for the day is roughly 2,500 calories (giving you a 500 kcal deficit) and you're getting 200 grams of fat in a day, that's far too much (have seen it happen). On the flipside, if you're totaling 15g a day it is too low.
I am not suggesting calorie counting day in day out, but I have always advised that a builder does not build a house without a measuring tape. It's a good idea to;
a) Have an idea of what you caloric intake should be, based on your activity, body weight/LBM etc
b) Have an idea what sort of macros you're eating within each meal if you're a novice. Over time you will know your body and your food quite well, and be able to have an educated guess on what's you're consuming with each meal. Often people starting out and novices have absolutely no idea what they're consuming, and when I have broken it down to them they're often over or under reporting their calories by 900-1100 on average.
You won't be counting calories your whole life, it's not sustainable, it's not a healthy preoccupation to have with food; but it is good to have a great education and understanding on what you're putting into your body. It will save you hassles down the track and many frustrations.
Please note there's no magic bullet, anyone suggesting something ironclad or onesizefitsall is not good advice. There are guidelines we should all use and fundamentals that you can't break away from (calories in, calories out et. al.), but individually, bodies respond differently and you will get to know what yours likes and doesn't like - this includes other aspects of your journey such as training. As a novice, you will start with the basic principles, such as reducing calories and some consistent training (the broad end of the funnel). As you progress, you'll go through to the narrow end of the funnel where you will refine what you do according to the results you're receiving.
For more reading on nutrition which is evidence based; Lyle Mcdonalds site has some great articles to chew through. He's quite dogmatic, but his advice is sound.