You can make all of the packing lists in the world. You can check as many boxes as you think you need to. Nothing is ever going to make more of an impact, however, than the overall quality and functionality of the gear you choose to invest in. Great news! You can definitely get high quality gear a little cheaper than you might think.
We have gotten to a point that we have been able to figure out what is essential for us and what we want to prioritise precious bag space with during our adventures. Over time, we have been able to build up some quality essentials that today go with us on every kind of adventure imaginable, whether it is a diving getaway to the coast or a three-month-long stint in Asia.