What research actually says about practice consistency versus talent
"Talent doesn't exist, only practice matters" has become a repeated slogan, guitar included. The problem: that slogan oversimplifies real, more nuanced research that's worth restating accurately.
What the original study actually showed
The landmark study on this topic (Ericsson, Krampe and Tesch-Römer, 1993) compared classical musicians at different skill levels and found the top performers had accumulated markedly more hours of "deliberate practice" — structured practice with precise feedback on mistakes, not just time spent playing for fun. Consistency over time shows up as a decisive factor: a few well-spread hours every day, year after year, rather than occasional intense sessions.
What the study did not say
The authors themselves stated that the study doesn't prove talent has no effect, nor that anyone can reach any level given enough hours. Some later reuses of the concept also broadened "deliberate practice" to cover ordinary, less structured practice — which helped fuel the oversimplified version of the slogan.
What holds up, and what's directly usable
The point that survives scrutiny: consistent, structured practice reliably beats intense-but-irregular practice for the same total number of hours. That's a concrete argument for short daily practice over one long weekly session.
Comparing Blues in E — getting started (level 1) and Blues turnaround — E (level 3) in the catalog gives a concrete sense of what consistency makes possible, one sheet at a time.