I never believe in work hard, I strongly believe in work smart. Nevertheless be honest working with everyone. Being honest is like spreading the seeds in the garden. Trust people and let them know you trust them and demand their trust. If you have overhead, cut if off as much as you can. Respect your employees, let them having birthdays and celebrations in the office, give them half day off on their big days. Give generous bonus and keep them happy. If you own company, your employees can buildyou an empire or they can destroy you real good. All depends on how you treat them.
If they make mistakes, forgive them once but the second time they should know that its time to say their goodbyes. Make it clear from the start when hire them.
This was my way of success closing million dollars of contracts with the US government.
All the best