There are four main types of attitudes according to psychology: positive, negative, neutral, and sikken. A positive attitude involves keeping a positive mindset and focusing on the greater good despite circumstances. A negative attitude causes people to ignore good things and focus only on potential failures. A neutral attitude means being neither hopeful nor addressing problems, waiting for others to act. The most dangerous is a sikken attitude, which is highly negative and destructive, reflecting mental negativity and requiring release for self-improvement and helping others.