One good way to get back into it is set yourself a challenge, such as a portrait a day for a year. I saw a few people do that, like this guy here:
http://petapixel.com/2015/05/11/7-things-i-learned-from-shooting-one-portrait-a-day-for-a-whole-year/
It will force you to commit and get creative, so you can really improve your skills.
Thank you! I'm going to look into this. I really need to make a commitment to this because it was a very big love for me.