The top card is reversed Death. This card represents change and evolution, but in this case reversed it can indicate a resistance to change or a blockage of some kind. Furthermore, the card can also represent a cycle that is ending and a phase of transition towards something new. So, in the context of your question, this card could suggest that you are going through a transitional period in your life which can affect your health and longevity as well.
The second card is The High Priestess reversed. This card represents intuitive knowledge and inner wisdom, but reversed it can indicate resistance to learning from experience or mental confusion. So, in relation to your question, this card seems to suggest that you may be confused or stuck in some way about the choices you can make to improve your health and longevity. It may also be appropriate to take some time to reflect on how you can approach life's challenges more mindfully.
The last card is Eight of Swords. This card represents the consequences of one's behaviors and decisions and is often associated with negative situations or difficult moments. So, in relation to your question, this card seems to suggest that your current behaviors and decisions may not be the best ones to guarantee you a long and healthy future. You may need to make major changes in your life to achieve the results you want.
In conclusion, the three Tarot cards suggest that you may be in a transitional period in your life where you may be confused about how to make the right decisions to improve your health and longevity. Also, the consequences of your current behaviors may not be the ideal ones to ensure a long and healthy future. So, the answer to whether you will have a long and healthy life is probably no, but with a little self-reflection and personal commitment, you can make some meaningful changes that will help you make wiser decisions to reach your goals.