Hello Prince.
I am also a mechanical engineer by education, But now i am an it entrepreneur, Definitely you can be a successful entrepreneur. i also used to think like you at the time of starting my company.
I was failed in making my first idea successful, i will share a key point that made it failure. so that it may help you to get out of such conditions.
At that time, i was afraid to share my idea with people why because i thought they will theft my idea and start it on their own. (usually 90% of startup people will think like this).
But the truth is that we can't think beyond our boundaries. we always feel right at what we think and we will feel it as a great idea.
But, it is not good to validate idea on our own. Its better to share our idea with people to get their views and suggestions. why because ultimately they are only our customers (we have to sell what people want, not what we had)
So, share your idea with as many as you can before you start developing the product to get clarity on your idea.
Don't be afraid to share it (no one can get the depth of your idea). If some one wants to copy your idea, they will copy even after you launch your product/service.
So, validate your idea by sharing it with others before you really start