Boost YouTube Watch Hours

I need help reaching 4,000 watch hours on my entertainment and vlogs YouTube channel. My target audience is teens and young adults.

I'm open to multiple strategies, including:
- Organic growth through SEO and content optimization
- Paid promotions and ads
- Collaborations with other YouTubers

Ideal Skills and Experience:
- Proven track record in increasing YouTube watch hours
- Expertise in SEO and content optimization
- Experience with paid promotions and ads
- Established network for collaboration with other YouTubers
- Understanding of trends and interests of teens and young adults

Please share any relevant experience and approach.