Categorize social interactions by your energy level afterward. 'Sofa friends' leave you drained and needing to recover, while 'treadmill friends' energize and inspire you. Actively curate your social circle and content diet to favor the people and information that uplift you.

According to Mohnish Pabrai, Buffett categorizes people into three groups: 3% are terrible, 94% are average, and 3% are wonderful. To optimize your life and associations, ignore the bottom 97% and concentrate your energy exclusively on the top 3% of genuinely wonderful people.

A practical way to improve your mindset is to write down the people you spend the most time with and score them from 1 (negative) to 10 (positive). Consciously reduce time with low-scorers. You are the byproduct of the energy you consume from others.

Periodically evaluate the people in your life by asking if interactions with them are easy, light, fun, or educational. If not, consciously limit future engagement. This 'friendventory' protects your most valuable resource—your energy—and creates space for more positive relationships.

Sales performance is heavily influenced by your peer group. Actively associating with successful, positive colleagues ('eagles') will elevate your mindset and skills, while spending time with struggling, negative sellers will reinforce bad habits and pull you down.

Top performers naturally gravitate toward each other, sharing strategies and reinforcing a winning mindset. Underperformers often commiserate, creating a cycle of negativity. To improve, salespeople must consciously change their work social circle to absorb the habits and attitudes of high achievers.

The people around you set your performance floor and ceiling. Conduct a 'friendventory' by asking tough questions like, "Would I let my child date them?" and "Are they energy amplifiers or vampires?" to intentionally curate a circle that pushes you forward, not holds you back.

Treat each person in your life as their own unique social media platform. This mental model helps you consciously choose which "feeds" you engage with, allowing you to curate your informational and energetic diet as deliberately as you manage apps on your phone.

Building influence requires a strategic approach. Actively survey your professional relationships, identify where you lack connections with stakeholders, and methodically invest time in building alliances with leaders who can advocate for your ideas when you're not in the room.