Christianity is all about living right. Living according to the Word of God. When you buy a refrigerator they give you a manual that you must read and understand. When you apply what you read in the manual the refrigerator performs in a manner promised by the manufacturer. The manual is supplied by the manufacturer because he is the only one who understands the product better than anyone else.
God is the the creator of all things. He put instructions in each and every creature on how they should perform that is why all creatures are predictable except humans. God loved us so much that He created us in His image and gave us the the right to make our own decisions. He also gave us His Word (The Bible). We can choose to regard or disregard His word but there are consequences involved. The Bible is the manual provided for by the Manufacturer. Every instruction is penned down by God Himself in His Word. You may go to church and read the bible everyday but you will not live successfully unless you consider living according to the word of God.
Going to church is not a bad idea, telling people that you go to church is not necessary but living right is all that matters. Seek to please God each and every single day. Let everyone see the Christ in you by the way you live. You do not have to act like a Christian on a Sunday and then live like a devil from Monday to Saturday it does not work like that. You can start with chapters 5, 6, and 7 of the book of Matthew if you did not know what I am talking about. You will get clear instructions on how you should should treat e.g. your enemies, neighbours orphans and widows.
The bible is your manual. The bible alone. Please discard that doctrine you are using!!! You only need the BIBLE.