@Quincy Knighten,
I'm in the same boat as you (full-time job, married, father) and I just want to say, you are doing yourself a huge favor by participating on this site. In the last 2 months, I've realized (while asking myself where to start) that the more I posted and asked questions on BiggerPockets, the quicker I learned and the more I learned.
Shorter version of advice: I cut out TV and sleeping in from my daily routine and replaced that time with real estate books & podcasts. The few hours every week help A LOT.
Longer version of advice:
The only advice I can offer you is what I've been doing lately. I started by mapping out every hour of my week (and still do every Sunday evening) and I looked for empty space where I'm not at work, sleeping, or commuting. This "empty space" consists of watching TV, listening to the radio on my ride to work, lunch break, sleeping in, etc. I took that space and filled it with "Family Time" or "Real Estate". It sounds corny but it has worked for me.
Here's my typical weekday:
I get up before my wife and son do (~4:30 AM), crank out a 30-minute Miracle Morning, skim the newspaper, and check emails before leaving for work at 6 AM.
I'm getting about 5-6 hours of sleep but it's been more than enough, and I've actually been sleeping sounder than before (I think it's because I know I'm actively pursuing REI and getting the most out of my day; I'm not laying there trying to sleep but thinking "I should be looking more into this investing thing"). And after about 2 weeks of doing it everyday, just like any other habit, you get used to it.
Then, I listen to the BP podcast or other negotiation/real estate/finance/business podcasts during my commute. I have cut my lunch break to about 15 minutes so I can make a few phone calls (to banks, courthouse, a few friends that are investors, etc.) during that time. I hang out/play with my son and wife from the time I get home from work (~5:30 PM) until they go to sleep (~9 PM). Then, I spend 1-2 hours, before going to bed, reading real estate books, reading BP threads, and working on marketing to leads.
Also, I've realized I'm getting to spend more time with my family by planning my week out like this. Which is the whole reason I'm investing in the first place.
The weekends are a balancing act. I still get up and go to sleep around the same time but as you know, there are family activities, visits with friends, ball games, church, and other things that crowd up the weekends pretty quickly. I use the 1-2 hours in the evening (I talked about before) and 1-2 hours in the early morning for REI learning and business development. My wife and I agreed that I should go Driving-for-Dollars during Saturday mornings so I'm gone from 6 AM until about 9 AM looking for properties in my target areas. Other than that, the weekends are predominantly for Family Time.
Good luck,
Trent
Cool Resources:
Read "Rhinocerous Success" by Scott Alexander
Listen to Hal Elrod's philosophy about not needing sleep.
Read The Ultimate Beginner's Guide to Real Estate Investing by Dorkin & Turner -- I read this twice and it really helped to guide me into the niche and strategy that fit my goals.