Nothing can satisfy me the way that Christ can. There are many things on earth that bring us joy & pleasure, but if you look at how long those last you will see that they are only temporary.
"Problems don't go away by pretending they aren't there"
If I am feeling down or if I'm lacking confidence I could go buy new clothes to make me feel snazzy & I can go get my hair done differently but that doesn't do anything for the real issue. These are light hearted examples of chasing after temporary pleasures but a few other examples are relationships, money, drugs, alcohol, friends, hobbies, cars, etc. You can go chasing after the next thing, then the next thing, and then the next but if you keep doing that nothing will change.
Take your burdens & insecurities to God. He can/will show you exactly where you are going wrong. My favorite way to get guidance is by reading the bible. It's instructions are clear and to the point.
Just know that if you want to see change you have to start at the foot of the cross.