Go for it now. The future is promised to no one.
Without hard work, nothing grows but weeds.
What you do today can improve all your tomorrows.
Problems are not stop signs, they are guidelines.
If you're going through hell, keep going.
Expect problems and eat them for breakfast.
If you think you can do it, you can.
Always desire to learn something useful.
You never know what motivates you.
To know oneself, one should assert oneself.
I have seen doctors, in good faith, leave patients on steroids for years, thinking they are doing right. A friend of mine was on steroids for so long, she has severe osteoporosis.