Grammar Question

Hello, I would like to know if there are any differences between "by myself" and "on my own"??

30 Days Challenge - Chapter 30 I can't believe it's already the final of the challenge..I mean the last chapter to be written and shared about it. I can't express how much it was good to me, helped me a lot with vocabulary, some rules in it and even where to find more information. I have been realising that I'm improving a lot since my first note written and this is amazing because I feel more prepared to FCE exame. I have made a lot of friends also since I started to write and they have been helping on my questions about English pronounce, vocabulary and things related!! I would just want to say thank you to everyone who have involved with this challenge, you are amazing and great things are hoping and deserved for you

30 Days Challenge - Chapter 29 Today I went back on Campus at the University to continuous the course I'm doing. It was nice to see my friends again and have that feeling of studying to get the wished career... I am saying that because last week I had the week off because the universities, schools and other public service do not work right because there was a strike and it's still happening but not so hard as before

30 Days Challenge - Chapter 28 Hey guys! What kind of games do you like? I thought about that question cause I used to play a lot of games and nowadays I can't do that as frequently as I would want. They said life gets harder and boring, I think they are, in some parts, right...I mean as you are growing, you have to be able to deal with such problems and responsibilities and maybe you just want to open the bedroom's door, go toward to bed and sleep like you've never slept before. But the student or adult doesn't let you do that

30 Days Challenge - Chapter 27 Guys, Have you experienced some strange situations in your life recently? I mean, It's always nice to do something unusual because it helps us to increase as better people, in the way of getting more knowledge about life. I do not know exactly but sometimes I feel good to be out of place, challenging me to face new situations that I think I would not be able to do it but when I experienced I feel amazed. How have I never tried it before? The fear is such a block in our life

30 Days Challenge - Chapter 26 Hello, Today I'm here to talk about intonations in a language... I mean as I'm talking with a native speaker from south of USA, he said to me that I need to improve this part. My intonation does not sound like a native and I did not realize that until he said it. I think because when we are not native, we do not pay attention to specific small things however it can make a huge difference during conversations. That's why I'm running behind the time spent not practicing that aspect of the language

30 Days Challenge - Chapter 25 Finally, I'm in the final of the semester at university!! I'm so happy because as I begin in the second month of the year, I have been doing a lot of projects, studying a lot to get good scores in the subjects and be relaxed as soon as I can. There is just one more step there: The exam week...I mean one week with exams each day, some days more than one but It's gonna be ok hehe And after that, it will be vacation!!! So nice!

30 Days Challenge - Chapter 24 Today I'm so excited to tell you that I am helping someone with my own language, my mother language... I mean I'm helping someone in the process of learning Portuguese and It is so nice!! We have been talking in some application, sending audios and correcting both during the time we practice. He already has been to my country and he liked a lot, He got interested in Portuguese when he watched a music video from Mallu Magalhães, a great Brazilian singer