The Golden Rule
Gal 5:14 The entire law is summed up in a single command: "Love your neighbor as yourself." (Lev 19:18)
There's an important distinction between following the spirit of the law - which is love - and following legalism which puts one in bondage to rules and regulations. By placing emphasis on rules and regulations over that of love, Legalism often comes at odds with the very purpose of the law. This was often a source of conflict between Jesus and the religious elite of his day.
So consider what rules and regulations you may have in your life and whether they are promoting love for your neighbor or hindering it. Does your practice of your religion in any way get in the way of loving your neighbor as yourself?