There is no shame or weakness in asking for help to heal your marriage. Approaching God first and relying on His word to guide your decisions and cleanse your heart is absolutely priority. But, don’t be so prideful that you can’t hear God saying get help.
Start with your Pastor. Hopefully he will give you the guidance needed to refer you to a local christian agency that can help restore your marriage. Some churches are able to provide counseling within. That is a great resource to utilize. Maybe a family member or a close friend has experience with a therapist that proves creditability. Take their advice. If you are unable to find any information, pray and research for christian-based counselors in your area and you can always use Focus On the Family’s offer to help you locate a counselor in your area.
Below are resources that we have personally read but there is an abundance of helpful books that can point you in the right direction. Take some time to ask around or search the internet for reviews and start reading!