I try to stick with sound reasoning. You have premise and formal reasoning. If reasoning has formal error, there is a problem. It is almost like maths. If 1+1 is 11, you made a mistake. But many people forget to check the premise. Because in Roman numbers, I + I actually is II.
The hard part is, to apply that to your own arguments. Too often emotion is the driving factor. Not the accuracy of any facts. So you start with your unfounded opinion, the automatic thought, and try to justify it after the fact. Instead of building up from the ground and arriving at a founded opinion.
To use this thread as an example, OP was angry because the thing did not work out as expected and overlooked his own mistake. Lashing out in anger, making threads on at least two forums. When made aware of his factual error about the supposedly wrong description, he backpaddled to claiming, he was mislead. Still justifying his initial anger, instead of admitting the mistake. He even invoked an appeal to authority (a fallacy). He claimed his own expert level photoshop skills, to show that the assets could not be made to work, arguing that it must be still the assets that are at fault.