Packing on muscle is no easy feat regardless of whether you're a string bean or a husky guy. And why you're missing out on gains is typically caused by a number of reasons that can be easily avoided. So if you're frustrated about being stuck in the place and at the same weight, it's time to assess what you're doing and make a change.
Building muscle and packing on the pounds isn't just about "picking things up and putting them down." What's holding you back?