I think I am lost:

I will present whole thing here that what did I do (its 2 years old thing but I written down the things in my diary):

- I built mining rig and mined only ETH using Claymore miner

- I generated wallet address using geth

- I did "geth account new"

- I specified passpharase

- I made a copy of keystore file

- I have (a) 0x address (b) keystore file and (c) passphrase

- I DO NOT have private key.

I do have ETH because I get my balance when I enter my 0x address in EtherScan

Please help me in this. What should I do.

Thank you in advance.