Hello Shreya,
well, there are mix reviews you will find in this forum, even in outside real world. I do also have nearly 7 years of gap and I researched a lot to get information about whether I am eligible to apply for study visa or not. But really got mixed reviews.
I strongly recommend you to please listen to your inner voice if it says yes then please go for it. There are many cases I have read on this forum who got their visa after nearly 8-10 years gap and many also not got a visa even without any gap.
I am applying for student visa JAN 2018, gathering documents and arranging finance. Please keep in touch I will really help you to share much information which probably I haven't got easily.
Visa depends on mainly Three criteria.
1) your actual intention to study further after such a long period.
2) is your future study linking with your past experience or not?
3) prove that you will come back at the end of the study permit (just for visa officer)
Wishing you best of luck for your decision.