Hey my dear friend, there's something I realise when I observed my, and my relatives' lives.
Everything happens for a reason. You're here, right now, based on the decisions you've made in the past. And what you choose to do now will affect your future.
Just remember that there's always ups and downs in life. Also, life is never fair. Never compare your life with others.... some may have more money, more friends, more connections. But what matters is being content with what you have - your lovely friends and family, your talents and abilities, and most importantly, you yourself. Not content with your life? Then fine you can work on it to improve but don't stress yourself too much. You are unique - you are the only unique individual of the billions of people in the world. Don't belittle yourself. And again, try not to compare yourself and your life with others. Everyone has their struggles... so that person whom you think is doing great may have struggles and problems we don't know.
Have a nice rest or a getaway and then start planning what to do ahead. Don't look back at your past anymore. What's done is done. What's past is past. We can't change the past, but we can change the future. And that lies on the decisions and choices you do now.
Good luck and hugs!