Your dream appears to reflect deep-seated feelings of anxiety, pressure, and self-doubt, particularly related to your work life and responsibilities. The setting of the new job in a tall building within a congested city may symbolize your feelings of being overwhelmed or lost in a demanding environment. The train journey could represent a transition or a new phase in your life, indicating your movement into unfamiliar territory.

The task of holding the hands of a patient during surgery while witnessing such a distressing scene suggests a sense of vulnerability and emotional weight. The image of the shriveled body may reflect your fears regarding failure, loss, or the fragility of life. It's possible that this symbolizes something in your life that feels broken or that you’re struggling to support.

The feelings of guilt and hopelessness you experienced in the dream, particularly about being late and not being able to help, indicate a fear of not meeting expectations—either your own or those imposed by others. The negative comments from your coworkers and supervisor might represent your internal critic, suggesting that you feel judged or that you're not living up to perceived standards.

The traffic jam and inability to find your car could symbolize feelings of being stuck or unable to escape the pressures you face. It might also indicate a longing for rest and reprieve that feels just out of reach.

Overall, this dream could be inviting you to explore your current stressors and emotional burdens, especially concerning your work life. It might be beneficial to reflect on what aspects of your job are causing anxiety and consider ways to address those feelings. Seeking support from friends, colleagues, or a professional could also help you navigate these emotions and regain a sense of control and peace.