Being a marketing champion, needs a well-laid strategy, planned tests, great gut feeling, calculations and lot of efforts put in the right direction.
Following are some pointers which will be helpful in becoming a successful optimizer.
Learn from your mentors. See how they are incentivized. How they reached their goals.
Hypothesize first and then test.
Test on qualitative data.
Learn from real customers. Record their feedback. What is frustrating about your product. Learn from case studies. Hire a professional, probably a consultant, who can help you make better decisions.
Involve other departments of your company. Keep in mind, as many people as many brains. All others can help in your test.
The main result should be revenue not just increase in numbers.
Be a leader. Learn more. Grow your networks.
Don't give up and don't get agitated over non-resulting tests as I already said not all tests win. Don’t get disappointed. Try again with new data.