Disclaimer: I don’t have the full answer to this question, I only have part. AND, this answer lived out will and should look different for every follower of Jesus.
Places the Bible says you should invest:
The Secret Place- Matthew 6:6 says “When you pray, go into your room and shut the door and pray to your Father who is in secret. And your Father who sees in secret will reward you.” Not only did Jesus say to do this, He did it in Luke 6:12 (except it was on the mountainside). The Secret Place always is and always will be your life source. It will be your place of refuge and your fountain of joy. It will be where God speaks revelation unto your heart and where you behold His glory while being transformed into His likeness (2 Corinthians 3:17-18). It will be your home within your home. It will be your meeting place with the God of the universe. When all else fails, and it will, heeding the call of Jesus in John 15 to abide and remain in Him will be your all. But only if you sow into it. You have to visit your meeting place with God time and time again. He will show up.
The Church (aka other Christians)- I’m going to lump family and friends who are believers into this one. Jesus says in John 13:35 that the world will know we are His disciples by the love Christians have for one another. And not that fake “I love you” stuff that is only expressed by the Instagram post that says how cool they are on their birthday. That’s good and all, but I’m talking about that love that bears one another’s burdens (Galatians 6:2). I’m talking about the love that still honors a person even when they have excluded you and made you feel ashamed. I’m talking about the love that sticks around even in hard times. I’m talking about a love that is emptied of selfishness (Phillipians 2:4). I’m talking about a love that is explosive with joy and thanksgiving. I’m talking about a love that believes in, accepts and celebrates a person exactly for who they are. No more, no less. A love that sees a person and says, “You’re worthy.” I encourage you to go find a group of believers that might call itself a church or fellowship that you can live this out with. It’s our highest calling and command alongside loving God Himself (Matthew 22:37-39).
People who don’t know Jesus- I pretty much should just copy and paste what I said for investing in the Church into this section. Because it’s THE EXACT SAME… nearly. The only difference is that when you choose to selflessly love people who don’t know Jesus, you shouldn’t be surprised when they throw it back in your face or simply don’t understand it. We have Jesus’s Great Commission to make disciples of all nations (Matthew 28:18-20), but we also have His promise that in this world we will have trouble (John 16:33). So as a follower of Jesus, you’re called to unconditionally love everyone, but understand that it won’t always be easy or comfortable. That’s why investing in the Secret Place and the Church is so vital. Those things won’t always be the easiest either, but they give you life and build you up in love. I encourage you to make a concerted effort to invite people who don’t know the Lord into your life. Not to love them with an agenda, but to simply love them.
I’m sure you’ve gathered by now that I can’t tell you exactly where and how to do these things, but here’s the advice I can give on how to go about figuring that out.
Pray and ask for discernment. Many times God will give you a sign or a feeling that you’re supposed to be somewhere or with someone, but that most often comes by discernment through the Holy Spirit. Ask for help with making a decision and God will come to assist.
Commit. Once you find a place or people/person that you think is worth investing in, simply give it or them a fair shot. It takes some degree of giving yourself to a place/people in order to truly understand if you are supposed to be there.
Serve. The best way to grow roots in a place or in a group is by serving. You’re at your best when you’re giving yourself away and people are giving themselves to you. You just gotta take that first step.