Can we choose what to solve/mine

[Yudhisthir]

I've heard about mining and tried it myself.
But how can we target a specific transaction (and make it faster). Like https://bitcointalk.org/index.php?topic=1955028.0 ?

[pooya87]

as a miner you have access to the same mempool like everyone else (the pool of all the transactions) so you see each one of them. now you can write a simple code to only take from that mempool transactions that you like, for example only transactions that are paying a high fee, or transactions that you yourself made or one of your users sent you. and then include those in the new block you mine.

[DannyHamilton]

You need to have access to enough hashpower to solve a block on your own.

This either involves building a HUGE mining farm, or running a mining pool with enough participants.

If you are only a participant in a pool, then you don't get to choose, the pool does.