Hold yourself accountable
To hold yourself accountable, you must become aware of the commitments you make in your life. Some of these were made consciously, many were not.
You have many rights in society and you have many responsibilities. In each area of your life - health, love, family, friends, work, and so on - it is highly likely you follow through on less than you commit to. Is this the person you want to be?
Like a smith repeatedly striking metal to forge a blade, accountability erects and reinforces the boundaries around what is important in our lives.
No-one is coming
It is clear to anyone that life is unfair. You are not responsible for everything that happens to you.
It is also clear that no-one is coming to make everything better.
You are responsible
There is one common denominator for the results in your life, however - you.
So given it is your life, you may as well take responsibility for as much of it as you can.
Now is the time
You already know there is nothing but the present. You may hope for more.
By not being accountable, you dishonour who you have been and cheat who you could be. You short-change the future version of yourself by surrendering to fate and replaying you old stories.