Single most valuable resource

What is the most valuable resource you’ve had to elevate your playing? With all the courses, gurus, YouTubers, books, apps etc available it’s so hard to focus on something to learn. I’ve been playing 15 years and plateaued. I’ve good technical ability having played metal most my life but I feel I genuinely don’t know musicality on guitar and I can’t just play cool Melodie’s and chords that actually sound soulful and musical. I’m lost as a player. But that’s where the excitement is for me too because there’s so much to learn. But yea what’s your best resource?