is starting a marketing agency right career choice

i am at the crossroad of my life where i am paid really well , in senior leadership growth yet i feel i can do much more and whenever i see a company I could clearly see why their marketing clearly sucks i have this itch to do marketing and growth for everyone but my fear is if i work with 10 clients , what if i am not able to deliver to the 4 clients who are relying on me what should i do? for context here is my experience stating some of the things me and my team achieved → 27M influencer marketing views in a week at \~$2 CPM → Took a company from $200K → $11M ARR in 10 weeks through growth hacks → 1B+ UGC views from upcoming creators at \~$0.80 CPM → 7 Product Hunt #1 spots in a month (2 companies raised after) → 10M+ Reddit views → 30+ monthly enterprise demos → Shipped + marketed products generating $150K+ through PLG, Reddit & SEO → 3M monthly SEO signups in the US → Newsletters to 20K subs + webinars with 500 avg attendees and 40% retention → 62+ community events, including one with 10K+ offline participants → Events with Pan-IIT, Government of India & OpenAI → Personal brands to 50K+ followers + 20M monthly views → \~$100K/month in US ad spend → Product role on a product with millions of global users + built a viral referral (4 in 10 users referring in SEA) program → 1 year in VC understanding user + investor storytelling → TikTok Shop brands doing \~$3M/month → 5 viral X/LinkedIn launches, highest at 500K views → PR narrative generating 30M+ coverage/views