Wow, you're a brave person to assume that everyone on this site will agree that energy consumption causes climate change. (I assume you primarily mean burning fossil fuels or do you mean a more widespread entropy based line of thinking?)
As for individual impact, re-using items where possible, e.g. get a re-usable water bottle instead of bottled water; canvas bags instead of disposable ones etc. If you can’t re-use try and recycle.
In the home, making sure it’s well thermally insulated. Use energy efficient bulbs and use them as little as possible. If you’re in a hot part of the world look at external shade, shade on ‘sun-side’ windows, ceiling fan etc. Minimize the amount of electronic goods you have that are ‘always on’. Get efficient appliances, always do a full load of laundry, minimize use of tumble dryer, look at on demand water heating, under floor heating…
Don’t fly. Minimize ‘powered travel’, walk or bike instead. If you must travel use mass transit/public transport if possible. If you must travel individually use the most efficient vehicle possible (scooter, Motorbike, small car/hybrid…); try to avoid congestion; keep to optimal speed etc.
I’m not sure this is what you were looking for, and lets be honest how many of us are going to go the whole hog on some of these?
KENAT, probably the least qualified checker you'll ever meet...