Is it possible for someone to give themselves a heart attack? Why? How?

Answer 1

Although there are multiple medications that are available in the hospitals/pharmacies but you require a prescription for them.
The target to achieve a heart attack requires 2 basic criterias:
1) overload the heart so that it is unable to meet oxygen need.
2)decreasing the carrier mechanism of oxygen to heart.
However certain cough medications can ppt. a heart attack and even death.
The answer to your WHY is mostly because of some personal problems.
How: as mentioned above.
However don't experiment on yourself as it might lead you live a crippled life, where you are at the mercy of others.