Hello there newbie, it's lovely to meet even more people making the change to veganism. Here are a few ideas that I would like to share with you - food for thought rather than instructions I suppose.
1. Don't feel guilty or bad about what you eat. You are making a massive, positive change in your life and at times it's going to be difficult. Be proud that you have made that choice and have started on that path. So what if occasionally you slip up? You'll get there in the end.
2. Make sure you've always got something lined up to eat that day that you know you will love. This way if you make something new for lunch then realise you don't like it you can always think to yourself "Mmmm, I've got a cup cake for after dinner tonight" and hopefully because you've got something great (and vegan!) to look forward to you won't be so tempted by dairy/meat products.
3. Keep on experimenting. There are hundreds of web sites and books out there dedicated to veganism that can show you what a fantastic variety is on offer, be brave and give them a go.
4. Focus on all of the things that you can have, rather than those that you can't. Most meat/dairy eaters that I know don't have a very varied diet. Don't for one moment think that you are limited in what you eat - instead focus on the massive array of ingredients available to you and their almost infinate combinations.
5. Stock up on vegan condiments that you know you like. Although they might be full of salt and/or sugar they are great for when a new food experiment goes wrong and you haven't got time/ingredients to make anything else. Almost everything tastes better smothered in sweet chilli sauce, right? When your cooking gets better and your taste buds change (I promise they will eventually) you won't need them as much.
I hope this helps, I'll be quiet now.
Good luck, be proud of your choices.