Emails alone don't cut it as an efficient way to communicate with team members. You're not still depending on email, are you?
Patience in long-term investing is one lesson. Investing in what you understand is another - the reason Buffett steers clear of tech.
If your customer has a beloved cat, as one company learned, ask after the feline; you'll get results.
Here's a tip: You're a consultant, not a salesperson. So, figure out what you're really selling.