Like curious said most people are not able to properly give tochacha today and most people are not able to handle mussar and being told by a stranger or even someone they know that something they are doing is wrong.
Some things we can do:
1. Lead by example and try to always have a positive influence on the people in your environment. You dont know how far being a good example goes.
2. Lets realize that the men here of which I am one of them, really cant understand the women’s yetzer hora to dress untzniusdig just like they will never understand how we are affected by looking at them. Its very difficult but lets try and find a limud zchus and a very simple one is that since we are so close to Moshiach’s arrival, the yetzer hora is throwing all he has got at us to prevent as many people as possible from being worthy of weocoming Moshiach. The way I understand it the yetzer hora is in high gear but the hamon am dont realize that since he is going all out we need to up our game so to speak and give it all we have got. Whatever worked for us in the past (10-15 years ago) is not enough today. We need to fortify ourselves and strengthen ourselves in every area of avodas Hashem.
3. When we Daven Hashiveinu avinu in Shemonah Esrei we should have in mind all of our brothers and sisters who have strayed from a steadfast commitment to Torah values. (I think this is the pashtus of the perush hamilos anyway.) Lets ask Hashem to put the proper thoughts and feelings into the minds and hearts of all our brethren so that we all serve Him in a manner that is befitting and proper.
Feel free to add to this list.