Even the characters we most associate with solitude, Batman, the Lone Ranger, Wolverine, are surrounded by people who make their effectiveness possible. Alfred. Tonto. The X-Men. Strip away the team and the myth collapses. The compelling image of the solo hero obscures the actual infrastructure of relationship that makes heroic action possible.
The Avengers exist because no single hero is sufficient for the threats the world actually faces. The Fellowship of the Ring forms because the mission requires different gifts, different strengths, different perspectives, and because the journey itself would break any single member who attempted it alone. Sam Gamgee is not a secondary character in Tolkien's story. He is the reason the primary character makes it to Mount Doom.
Your heroic journey has a Sam Gamgee somewhere, the person whose faithfulness, encouragement, and presence makes your mission possible. Your journey also has a team like the Avengers, the collection of people whose different gifts cover your blind spots, challenge your thinking, and hold you accountable to who you said you wanted to be.
Isolation is not strength. It is the condition the adversary most prefers, because a person standing alone is the most vulnerable version of themselves. I’ve learned a popular quote in my personal recovery work, “the opposite of addiction is not sobriety, it is connection.” I know from my group experience, that I’m at my most stable and solid, when I’m not stuck in my head and instead I’m caring how the other guys are doing and how I can show up for them.