You need to learn not to give a damn about every little thing. In that way, you can be less cruel to yourself.
Remember, not everything will go the way you want them to be. There will always be challenges, detours and other things you never expect to happen.
Don't ponder on it too much when the worst really did come. Try and pass by at as fast as you can, the faster the better.
Zoom through it once, analyse a little and move forward.
You don't need linger on your mistakes too long in order to learn and not commit them once again.
Sometimes, a short moment of realization and self awareness is enough. Take a few strides away from the negative, staying for too long can be a dangerous choice.
Try and not pay too much attention to people around you but never be insensitive about their feelings, it never make you a bettee person.
Just be a little self oriented. Worry about yourself, not about every little thing that goes wrong from from your peripheral view.
Be proud of your small achievements, be enthusiastic about dreams and goals. Be happy about little milestones and be thankful of new memories made.
Every day will be different and some days can be better while others tend to be disastrous but put in mind that whenever a bad comes, remind yourself of the good day from yesterday. Calm yourself and tell anxiety goodbye.
Being too affected about what's going around can be tiring so please lost soul, promise yourself... When everything seems too dark, too hard and too impossible, tell yourself otherwise. Focus on the good things in all the bad things that happened and try again... until the smiles out number the frowns.
Be less cruel with yourself. The negativity of the people around you does not need to have a relation with you every single time. It's not your fault his always frowning or why she's grumpy first thing in the morning. You're a beautiful soul so please, be kind to yourself, always.