You need to start listening what your body has to say. We often neglect that little voice that says we're way too tired to continue working, so we do it anyway. Most of the things in your life can be replaced - you can just go to the store and get a new one. But, your body isn't replaceable, you only have this one, and you need to make sure it'll last for a really long time. It's never too late to start, and no matter how old you're, you can make a difference. So, let's see what you can do!
You are what you eat - face that facts, and everything will be easier. You'll find skipping a greasy hamburger much easier if you imagine yourself as one, right? This doesn't have to be difficult, it may even be fun. In order to change your eating habits, you can sign up for a cooking class, learn some basics, and experiment at your home. Besides, you don't have to be a proper chef in order to prepare healthy meals for yourself, just browse a bit online, and I'm sure you'll find a tone of simple recipes.
You need to get that stress out as soon as possible - you probably don't even pay attention to how much of it has built up. Teach yourself to calm your thoughts and get that negative energy out of your body, because it poisons you. I suggest to start with some tutorials or a couple of beginner classes so that you can be confident you're doing everything right, and then find a way to put an hour of meditation somewhere into your busy daily schedule.
Go to Gym
Your body won't shape itself. It may be difficult at the beginning, and you probably have no will whatsoever to sweat and get exhausted, but before you know it, you'll get addicted to the feeling. Of course, exercising is practically useless if you don't eat healthy, so don't waste your time if you're not going to do it properly. One more thing - make sure you're doing all the exercises properly. If you have any health problems, with your spine perhaps, you can make it even worse by doing lousy workouts. Try to remember this, because it can be quite dangerous for you, and you should definitely read more on this subject. Also, if you do decide to meditate, you should know that it's quite helpful when it comes to proper posture.
Quit Bad Habits
You know you have to stop sometime, so why not know? Other than violating your health, bad habits like smoking, doing drugs or drinking alcohol ruin your body slowly from the outside, too. So, you shouldn't feel surprised if you notice that you're aging quickly, or that your body isn't capable of doing things you're used to do. Say no to this things once and for all, and don't hesitate from asking for help - there's no shame in that!
This will only be helpful concerning your appearance, but if you feel good when you look good, it will definitely come handy. The market is overloaded with all kinds of nurturing product, so you should definitely consult an expert before you pick out something. But, consider this as an option - this could be your new hobby! With a bit of research, you could become an expert in this area, and create homemade products which are absolutely matching your skin type and your needs. Follow all the instructions carefully until you get the basic knowledge, and then you can experiment with all kinds of ingredients. Of course, some basic chemistry knowledge is desirable, so you don't accidently burn something, but I'm sure you'll be careful.
When making this kind of life-changing decisions, and when you finally decide to dedicate your time to health, you need to be determined. Don't allow yourself to be seduced by a cigarette or a candy bar when you know what's in stake here - show that you have some discipline! It's not easy, but if you set your goals and stick to them, you'll be just fine. I hope you'll find my tips helpful! I really look forward to your feedback!