Being stoic can have both positive and negative outcomes. In life, you need to strive hard  in order to be successful. Stoic is a philosophy  of one's inability to show emotion. Emotions can be a great hindrance to anyone only if they would let it take over them. Always remember "mind over body". People use your weakness to overthrow you. Trust people who can be trusted. Keep your circle small but real. 

Be with someone who would rejoice to your success rather than discourage you. Stoicism is a great way, it shows professionalism to anyone applying it in their life. A stoic person isn't much a sociable person. They don't mix personal life to business world. As much as possible, professionalism is the vibe you would feel in them. 

The downside of being stoic is that people would find you arrogant. Some people don't understand this. You just need to keep this in mind that some people may not like you or understand you. Stop pleasing anyone. Care for those who care for you. Settle for more, never less.