As an HR expert, I understand that feeling unhappy at work can have a significant impact on your well-being and overall job satisfaction. It seems like you have been in this job for quite some time, and while the pay is satisfactory, the recent changes in your colleagues' behavior have made the work environment stressful and unpleasant for you.When considering whether to quit or not, it's important to evaluate the overall impact of your job on your mental and emotional health. Feeling constantly stressed and unhappy can have long-term effects on your well-being and productivity. It's also worth considering if the current situation is temporary or if it's likely to improve in the future. If the toxic work environment persists and affects your overall quality of life, it may be worth exploring other job opportunities.Before making a decision, I would recommend taking the following steps:1. Evaluate the situation: Identify the specific aspects of your job and the company culture that make you unhappy. Determine if there are any feasible solutions or if the issues are deeply rooted and unlikely to change.2. Explore other options: Research and assess potential job opportunities in different companies. Look for positions that align with your skills, interests, and values. Consider factors like company culture, growth opportunities, and potential salary.3. Upskill and showcase your abilities: If you are concerned about your qualifications affecting your job prospects, consider investing in upskilling or pursuing further education to enhance your credentials. Additionally, focus on highlighting your skills, achievements, and experiences during the application and interview process.4. Seek support: Talk to trusted friends, family members, or career counselors who can provide objective advice and support during this decision-making process.5. Balance risks and rewards: Evaluate the potential benefits of staying in your current job (e.g., stability, familiarity) against the potential gains from pursuing other opportunities (e.g., personal growth, happier work environment).Ultimately, the decision to stay or leave your job will depend on your personal circumstances and priorities. It's essential to prioritize your well-being and career growth when making this decision. Remember that sometimes taking a leap of faith and exploring new opportunities can lead to greater fulfillment and happiness in the long run.