Aim Low But Up
What you aim at determines what you see and where you go, whether you aim up or down. Regardless of which direction you aim at, the momentum that you build will compound. As long as you are aiming up, not matter how low, you will make progress and start improving your life.
Regardless of your circumstances, there will always be something you can do, no matter how trivial, that can result in some kind of improvement. Be humble. Set yourself a small goal that you can obtain, even if it is not glorious. This is better than nothing - better than being bitter and blaming others.
If you aim to make things better, then things will get better, and your world becomes bigger the more you do this. Start with small steps to build momentum. Compare yourself to who you were yesterday and not to who someone else is today. As you take incremental steps on the long journey, the habits that you build will compound on you. Focus on the process.
References
1139 - Jordan Peterson - The Joe Rogan Experience
12 Rules for Life by Jordan Peterson
Joe Rogan - Jordan Peterson's Philosophy on Self Improvement