Finding a Partner

I am 37 years old and is doing pretty well in life. I consider myself well rounded, kind hearted and with a great spirit. For the last 5 years I have been praying for the gift of a companion and a family. Most of my relationships have been long term but filled with fear of commitment from the other party and then I usually walk away because I feel like I am wasting my time. Of late I am filled with a feeling of sadness as I get older. How can I find peace and find a lifelong partner who is willing to commit?