You are new to the forum so we haven't got a good idea of what kind of player your are or personality type, etc; There aren't any pro's here as previously mentioned to offer you advice. With that said, I believe many people here are selling themselves short. All here could offer advice, some may apply, some may not but we all have had good and bad experiences with poker that hopefully we have learned from.
1. Practice good
bankroll management. You have a great bankroll to start with and it would be a shame to lose it all by playing beyond your means.
2. Tilt Management. Learn to recognize when you are on tilt, what types of things tilt you and how to properly manage it.
3. Start at lower levels than you are rolled for to get the feel of the people and rules, etc; at a particular place you are playing at. Different
casinos seem to have certain "flows" about them. It can't hurt to start low and feel out the flow before risking any portion of your bankroll.
4. Play at many different places. This will give you the opportunity to find a couple or several that you feel comfortable at. When you are comfortable with your surroundings, people tend to play better.
5. Don't get caught up any drama! Every place has their own and the types of people who create it or thrive upon it. Steer clear of it and the people who create it! Don't fall for any sob stories or feel bad for players - everyone has a story to tell. These are distractions you don't need. Try to prevent distractions.
6. Don't allow poker to consume your life! Although your intent is to become pro which will require a lot of hours in your new career don't forget about your family and or making family time and sticking to it no matter if you are running hot or not. It would suck to accomplish your goal only to come home to an empty house because you neglected your family and their needs.
7. Keep track of your play and that of your opponents. I keep a notebook with me, a little spiral one that fits easily into a pocket. During breaks I make notes on
hands and on my opponents. I became surprised to see how often the same players (the regulars) played the same way and didn't change up their play.
8. Plan 1 day a week where you take the whole day or half a day to review your weeks progress, your hands, research
poker strategy, etc; You can never stop learning or improving in poker. It's also great to know what seems to be working for you and to review that.
9. Tip the wait staff, bartenders, etc;. Get to know them. The ones you learn to like and trust will be a good source for knowing if there's a hot game going in the poker room or a player who you've marked as a fish or atm machine is playing. When you trust certain staff, you can give them your cell number and tip them for "tips" on where and when you're fish is playing or a good gaming going.
10. Treat it like a business. You own a business and therefore understand how businesses work. Treat your poker playing like a business. You aren't there to have fun and socialize, you are in business to make money.
Best of luck to you and your family! Keep us posted on your progress, good or bad. You'll find a lot members here willing to help through the bad times and cheer you on during the good times.