Unfortunately, I can’t answer that conclusively one way or the other. It all depends on you, what you like to do, your work ethic, personality, etc. If you are a good writer perhaps you could write a book and make money that way. Or, you could start your own website and do affiliate marketing. Just because you are young it doesn’t mean you can’t make money doing at least a few of these ideas. I wish you luck in your money making efforts!
Understand what a silent partner does. In short, the silent partner is an investor in a business partnership who does nothing except provide their capital. This type of investor, also known as a "limited partner," has no hand in the daily operations of the business. They are limited in liability to the amount of their investment, meaning that they could lose their investment, but not more. This type of investment provides passive income with the potential to be quite large if the company grows. However, there is no guarantee that the other partners will follow through on the promised growth.
There are dozens of ways to generate passive income. However, the option you select has to do with two metrics: time and money. Either you have a lot of time or a lot of money. Most people usually don't have both. But, if you have a lot of money, generating passive income almost instantly is easy. You can buy up some real estate and begin enjoying rental income. Or, you can invest in a dividend fund or some other investment vehicle that will begin generating a steady income for you.