Joe Bonamassa on improving one's playing:
Buy a really cheap guitar. The cheaper the better... and play that for a week.
Before we jump up victoriously & revel in the fact that we do own some of the cheapest guitar this side of planet boutique, we'd like to reflect why we own such instruments. For those of us who are serious players, the cheaper numbers serve as a reality check; if our skills are potent, it doesn't matter how much our guitar costs, we can still play well. This is a situation where true capacity would out-do any material deprivation. On the other hand, the newbies among us would hinge upon the instrument's lesser nature to internalize our abilities, needs & wants, before moving on to other models up the production tiers. All in all, the cheaper instruments would serve us in many ways, we see people with costly guitars who can't really play to save their nuts & are reminded that without the skills, we are actually nothing; our $5,000 guitar can't save us.
On a personal note, I do make it a point to check out the less costly guitars out there because there are some of the most well-crafted & sweet sounding instruments which are ignored because they don't possess the bling.