What is the best advice you can give to a student struggling with pronounciation?

Have you ever struggled with pronunciation in the language you decided to study? It seems to be a common problem for students. I need to improve my speech, as well. Give any advice for improvement of pronounciation in comments :) 

P. S. I'm currently looking for somebody to practice English with. I can also help with Russian. Don't hesitate to message me :) 

Free will. I would be grateful for any corrections:) I couldn’t believe the moment finally arrived. Two weeks ago I turned in my resignation letter. This letter was not an easy one. I was apparently in pains while mincing words and converting thoughts into sentences. It seems that I've spent 8 billion hours arranging, reading, and proofreading this dull paper. Hopefully, I turned it in at last. And now, startled and happy, I am standing in front of a ponderous table of secretary to bring this long-drawn-out process to its successful conclusion. Secretary is a plus-sized woman of unfavorable appearance. It is hard to tell what makes this pinkish lady look so off-putting. Maybe it is about her moveless countenance that speaks for the heart which is not to be easily touched. Perhaps it is about her downcast eyes and arrogantly upturned nose. She has always answered shortly, and now she hands me a thick pile of papers without a word at all. As I live the room, I feel the wind of freedom that comes through all opened windows and doors. Free and elated, I go by the ex-coworkers. They stare at me with envy and helplessness from their uniform supermarket sections. I feel the warm pleasing feeling in my stomach. It is a mixture of thrill and content. I anticipate future adventures and feel everything more acutely. Surrounding colors grow brighter than before, and I know that my quality of life rises with every step. Today, even a flavorless smell of frozen foods reminds me of sea freshness and summer evenings on the coast. Ironically, I am proud of myself more than a little. I never expected to be so free. I never expected to be so careless either. With an apologetic smile, I head for a better life having nothing but recommendation paper and scarce personal belongings.