I've started to do the same. I'm still eating meat (very little red meat) but I walk or cycle where I can, try to use public transport where I can't, look for locally produced food and goods, don't buy unnecessary stuff, often buy used things instead of new, recycle what I can, etc. Again not perfect but if we can each reduce our impact on the environment then it will help.I've removed red meat from my diet. Increased my rates of recycling. I cycle to work rather than drive. I've cut down massively on the purchase of new goods and in particular avoid those that have been imported preferring to focus on UK manufactured items where possible.
Far from perfect but it's a start.