Really depends on your style. Some niches I can just watch people sit down and talk because the topic interests me. Find the right pace in your niche and experiment with videos. Short intro, more effects less effects etc..
Find something that works for you, have a internal motivation to create videos. Tony robbins or other crap motivational gurus ain't going to help. It sounds cliché but if the only reason is because a motivational speaker said that or you want to be "successful" it may not be for you.
Most Channels that are in the Financial industry. Advertisers will pay higher RPM for each 1K views. But I wouldn't focus on that. Most of the people don't make money in the beginning either so... Hope I could help