I think it's achievable given the right gameplan! @Matt McConkey paints a pretty good roadmap of actionable steps you can take to start on the journey. If his advice resonates with you, I would suggest reading "Set For Life" by Scott Trench. It's an easy read and elaborates on Matt's roadmap above.
In the book, Scott will challenge you to examine your spending patterns and SAVE more, pay off debts, and accelerate your earning potential rather than rely on an inflation-tracking W2 salary. That's the first step -- from there, he goes into investment strategies and ways to start generating the cashflow and returns. I've also linked to a blog post of his that paints the picture very well.
I will say, that this book and strategy is geared towards someone who is already earning a median income or higher. It may not fit your current position and if it doesn't that's ok -- there are plenty of other books and/or strategies out there that will!
To sum it up, I would say: start trying to learn as much as possible, create an actionable plan... and MAKE IT HAPPEN.
Blog post link: https://www.biggerpockets.com/blog/becoming-a-landlord-the-easy-way
