Make them feel wanted.
Masechet Avot, Perek Aleph (chapter one), Mishnah Tet Vav (fifteen). The Mishnah says, “Shammai Omer (Shammai says).” The great Shammai, the counterpart to Hillel, taught the following: Aseh Toratecha Keva, make your Torah learning the main focus of your day, and make pursuing a livelihood a secondary occupation.
In other words, the main focus of your time should be Torah learning, day and night, and you should build in, carve out spots where you can focus on a livelihood, making a living, and taking care of your parnasa (a livelihood). Your main focus of the day shouldn't be money and this world and Olam HaZeh (this world) and parnasa; focus on Torah, which should be the main point of your day.
Others interpret this verse as saying, Aseh Toratecha Keva: make Torah set. What it means is that you shouldn't change how you speak about Torah to different people. Talk about Torah the same way, whether somebody is lenient or somebody is strict. You should have your approach to Torah: what you think the right thing is, say it like it is. Don't change how you discuss Torah based on the mood of the people you're talking to.
Secondly, say little, but do a lot. Don't be like those people who talk a big talk but don't end up accomplishing. Talk is cheap. Talk is not really substantial. We see this with Avraham Avinu: when he spoke to the malachim (angels), he said, “We'll bring you some bread.” But what did he say? Did he end up bringing them? He ended up bringing them. He brought them an entire animal. He fed it to them and gave them to eat. He spoke a little bit, but then he ended up accomplishing very much. That's the second idea of Shammai. Focus on action. Actions speak louder than words.
And thirdly, receive every person with a pleasant face. If you're having guests in your home, don't just think that you're feeding them and taking care of them, and that your mood and the expressions you have are irrelevant, so you can do it with a frown, with a sour face. No. When you're having people over and accepting them, even if you're giving them the best things in the world, if you don't do it with a smile, you're going to make them feel very bad. It's going to be as if you gave them nothing. If you eventually want people to appreciate it and understand the value of what you're doing, do it with a smile. Make them feel appreciated. Then, even if you don't give them such fancy things, and give them just a little bit, if you do it the right way, it's as if you gave them all the gifts in the world.