You have already told us you believe "gospel of Jesus Christ" requires a life-long obedience of works, else you'll be lost. That's not forgiveness or justification, as He revealed through Paul. It's probation that can only end in the Lake of Fire because it denies Christ's finished, perfect work FOR us.
1. Why do you believe you NEED a local church?
2. I don't have a local church. If there was one in my area that I agreed with doctrinally I would attend, but since none do, I'm commanded to shun them. And there are evidently few like-minded believers in my area. But I am a loosely affiliated member (by doctrine alone) with a loose affiliation with something called the Grace movement. There, I've identified myself, but there's a reason you refuse to do so.
3. "Don't do anything," I do not believe that. The believer is commanded to know who and what he is in Christ and walk by His Spirit. Salvation does not depend upon that, though, because the one in Him has already been forgiven and justified by His death and resurrection. "Live as you please," hypothetically yes, but it will cause agony as flesh, when fed, wars with the life of Christ within. It CAN be done but it is NEVER worth it -- God sees to that. And in any event, would it be the right thing for a believer to do? As Paul said, "God forbid!"