Experiencing the brink of life and death is usually a very extreme and painful experience, and it is not recommended to deliberately pursue such an experience. On the contrary, if you want to feel the depth and meaning of life, you can try the following safer ways: 1. **Extreme sports**: such as rock climbing, bungee jumping, surfing, etc., although these activities are exciting, they can bring the thrill of adventure in a safe situation. 2. **Deep travel**: Visiting some remote or challenging places and experiencing different cultures and environments can give you a deeper understanding of life. 3. **Self-challenge**: Participating in marathons, triathlons or other long-term endurance activities can allow you to feel the extreme challenges both physically and mentally. 4. **Volunteer service**: Participating in rescue activities or supporting vulnerable groups can make you feel the fragility and value of life. 5. **Meditation and contemplation**: Through meditation, sitting meditation and other methods, you can go deep into your heart and reflect on the meaning of life and existence. Life is precious, try to choose positive and constructive ways to experience and explore. If you are troubled by thinking about life and death, it is recommended to seek professional psychological counseling.