Lost Passphrase - Private SSH Key

I have created public and private SSH keys and as part of started any new WinSCP sessions I am prompted to enter a Passphrase.

Unfortunately I have not used this session for a while and have now forgotten the Passphrase. Is there any way for re-setting it ?

Any help / guidance will be greatly appreciated - Note I am a business User and not highly technical so please respond accordingly

Thanks
Brendan

No there's not. Were there a way to reset the passphrase, it would be useless to use passphrase at all.
You have to generate a new key pair.