Something that all human beings deal with, in one way or another, is comparison. I don't know why we make it such a big deal, but it is. There is a well-known quote that states--"Comparison is the thief of joy." I 100% agree with this. We often focus so much on how others are achieving their goals and doing "better" than us that we end up being unhappy with ourselves and long for someone else's life. Comparison can be dangerous as a follower of Christ. I have definitely struggled with this in the past, and sometimes I still do.
We have to get away from this mentality!
One thing I always have to remind myself of is that my relationship with God is unique to me. Only God and I know the details. I think that's how it's supposed to be in many instances. However, I think sometimes if we see glimpses of others' relationship with God, we can implement certain things that they do in hopes that it will help strengthen our relationship with Him.
For instance, if you have never focused on reading your Bible, you may see that someone else implements Bible reading multiple times a week. If there's a spark in you that pushes you to try reading your Bible more, take the chance! It is totally healthy and good to be inspired by others. It becomes unhealthy when you negatively question the relationship you have or when you feel that God wouldn't want a relationship with you because you aren't good enough.
Because each person's relationship is special and unique, what works for you may not work for another person. And that is okay. I also think it's important to know that being comfortable with your walk with Christ is good, but you cannot be complacent. We should always strive to better our relationship and put effort into it; this is our most important relationship. It may take trying new things, giving more time, and reflecting to strengthen your connection, but it's all a part of the process.
So if you're finding that you cannot stop comparing your relationship with the girl who portrays her relationship on Instagram, take a step back! Pray about it. Try new things. Focus on what you think you need to feel more connected to Jesus. He will give you the joy and peace that comparison takes away.