The parts of your motorcycle that you touch and interact with are all critically important to the feel of riding. Every touch, push, pull, and twist is what you experience on your bike and a brand new bike feels so crisp because everything is working as designed. You can service and replace specific items on your current bike to get it feeling great again. Here is a specific list of the highest reward items to get you started:
Service all pivot points and the throttle tube. The first touch with any new bike in the showroom is always either a twist of the throttle or a squeeze of the brake lever. Chances are good that your current bike has collected some dirt in the parts that move and that dirt makes the controls feel less smooth.
On most bikes it’s very easy to pull the pivot pins for the brake and clutch levers for inspection. If you find the pins too dirty or corroded, you can put them in an electric drill and spin them in sand paper to clean up the metal. Run a paper towel through the pivot points in the levers and where they rub against the perches to remove any built up grit. Apply a thin coating of waterproof grease or anti-seize and reassemble. Apply this same treatment to the rear brake pedal pivot and the folding tips of the brake and gear levers (if so equipped). For older bikes you should do the same with the foot peg pins because its very likely they are sticky and squeaky by now.