The biggest thing you can do at home to keep your body feeling its best is to move and eat an anti-inflammatory diet. Movement varies for different people. Those with sedentary lifestyles benefit from just committing to walking for 30 minutes/day - uninterrupted, with no electronic devices. The top 5 foods that create inflammation in our bodies are: processed sugars (anything with sugar or alternative sweeteners added), processed grains, caffeine, alcohol and reduced-fat dairy. If you can, cut these 5 things out and add in a high-quality Omega-3 supplement with both EPA and DHA in it (my favorites are Metagenics and Standard Process).
All that being said, if the bones in your spine are not moving properly, you need to see a qualified chiropractor to get the joints moving again. The above recommendations will be less effective, or not effective at all, if the joints in your spine are stuck and the nerves are not communicating properly!