By Scott Rutt Jim Cramer asks what if we stay the course and things go right? The history is very clear: At times like these, you need to stay the course, Jim Cramer told his Mad Money viewers Wednesday. As of Tuesday, the stock market had given back 50% of its gains since November. That’s an event that has only happened 21 times since 1929. And each of those events was the perfect time to buy. It’s easy to be overwhelmed by the daily doom and gloom of everything that’s going wrong, Cramer admitted. It’s far harder to think of everything that could go right. Time to restart your engines? Over …