The 3 weeks is coming soon, starting on Thursday. I was recently looking at a certain website and it gave some great tips on what we can all work on. I'm writing this in my own words.
update, 7 tips
Character traits - we can each look inside and think of something to work on and improve on about ourself. By working on this, we become better friends, parents, spouses, neighbors, etc. - I understand how some people feel when it seems like you're the only one doing something. But, I have to come realize that we still need to do it because it's the right thing to do, even if we feel alone in doing it.
Prayer - Learn the meaning of the words so it is more meaningful for you and you have more kavanah. Also, when you have a little time to yourself, either during the day or at night, make a personal prayer and say what is on your mind. This helps with strenghtening our connection to Hashem
Seek, keep searching for and learn Jewish info that will help you to build your knowledge. Then with that knowledge, we can improve our practice.
Emunah - This one is very hard for most of us. But it is important to work on.
- Just like parents who love their children, want what's best for them, so too Hashem wants what is best for us. - And just like children don't always understand their parents, we sometimes are bewildered at the situations that happen to us and wonder why they happen. However, we must understand that everything is for the best. There's this story I read in which this lady was going through a very hard time and she had to take off time from work to recuperate. During those weeks, she spent more time with her family. She writes that eventhough she went through what she did, she's in a better situation now because it helped her with her priorities. Plus, her children are happier with her being there.
Also, remember that if you're worried about something, work on trusting in Hashem that He'll help you through it
Love - This can be either hard or easy, depending on who we are around. Some people are easier to like and some are harder. However, we must remember that we Jews are a family. Eventhough we fight, we still deep down care about each other.
Joy - Do something with joy, whether it is when you light shabbos candles, or say a blessing on food and think about being glad to have it, or some other mitzvah. When you do it with joy, it becomes more meaningful and pleasureble.
Appreciate - Think about the things that you are grateful for. For example, being healthy, having friends, having shelter, nourishment, clothing, etc. I read an article in which someone suggested that couples should have a gratitued notebook. In it they should write what they appreciate about their spouse. By focusing on their love for each other, they strengthen their relationship.
Well I hope this is helpful, have a good week