You may make more money
When you begin to speak up, you may make more money. If you feel you’re being low-balled by a client, tell them your bottom line. Tell them what you absolutely must be paid in order to make this work worth it for you. If you feel your job owes you a raise, prepare your reasons why and present them. If you feel you should get more for that car you’re selling, don’t take that low offer. Tell them why it’s worth more.