Fighting own case in high court

Yes.

There are no provisions in law through which engagement of advocate is compulsory. Person may file or defend any case personally without engaging advocate. You may plead case of your own or your relative in court after securing power of attorney from your relative subject to permission of council of Section 32 of Advocate Act. For your own case no such power of attorney, VOKALATNAMA is needed.

Lawyers just represent you before the court of law. Actually you are pleading.

Sample petitions available in my profile links.

Thanks Sir

Indeed, you can represent your own case in the Court

It is called - petitioner in person.