First thing I do after taking tube out is deduce what caused flat and remove object that caused it. Don't use finger to run round the inside. A fellow bike store worker ended up with a broken end of a hypodermic in his finger!
Don't waste time patching at roadside. Carry a spare tube. Only use the patch kit you are also carrying if you use up spare tube(s).
Here's
the kit I carry for long distance. The tool kit is pretty much standard for any distance, except for spare tyre.