Why am i so scared incase i have a heart attack or get heart problems?

Worried at 30: You have few more decades to worry , about getting an heart attack , very rare in a healthy person at your age.You have other real issues your job , family etc , but you can postpone or even prevent for few more decades , by your good life style , by balanced healthy diet , weight reduction if over weight , regular exercises , avoiding smoking drinking and drugs , sometimes may need prof. help