Read the edits before commenting / PMing me
You will NEVER be able to outlift a bad diet. This is a simple reality that everyone who seeks a greater physique should know and understand. I know for a fact you guys know this but you need to APPLY it. Don't just tell yourself that you're going to eat healthy and then drink a beer with a pizza the same evening.
Quit making excuses like 'I deserve to eat that one cheat meal, I worked out 4 times this week!'. This is the kind of mentality that will set you so far back in the long run.
When you first start lifting you will make gains no matter what you eat. If you take it seriously. You will lift heavier weights and your muscles will get bigger. This will go on for a few months, perhaps up to 1-2 years.
You will get used to eating bad and working out, but that is NOT the way you should be doing it. The fact that it works when you start out is maybe the reason why a lot of guys hit a plateau after a certain time. Once you hit that plateau it's hard. Your muscles are big but theres a lot of fat covering it, no definition and it's not as good as it could be.
If you just started lifting, do not fall into that trap. Start improving your diet right away. Start counting your calories and cut everything unhealthy from your life.
Don't drink soda, drink water.
Don't eat dessert, eat a fruit.
Don't eat fries, eat rice.
Eat home-cooked meals.
Get these vegetables in.
I lifted for a long time without eating right, I built strenght, but I was not lean. I successfully dropped 40 pounds in 8 months by just changing my eating habits. The workouts remained the same, but everything else changed. I feel a lot better than I used to and I wish I had started eating right from the get-go.
If you need help with your diet, feel free to PM me.
EDIT: You cannot go cold turkey and completely change your diet overnight, but you should be trying to improve overtime and set goals. Do not fall into a comfort zone. Cheat meals are obviously a thing, but do not have 3 of them a week. Keep it to a minimum if you're struggling.
Edit 2 : This post is obviously not gonna apply to everybody, we're all different. Some guys can eat whatever they want and stay small, while some have a hard time cutting. That's life.
Edit 3 : I am NOT a nutritionist nor am I a professional bodybuilder. I successfully achieved a decent cut and I just wanted to share the mentality I had with you guys. This post was for new guys who just got into lifting. I believed they should be aware that a dirty bulk is not the way to go and that if they decided to get into lifting, they should also get into a better diet.