The objective of the study is to investigate the second-year English major students’ interests, strategies, attitudes, and grammatical errors towards their writing skills at Rangsit University. Ninety participants who enrolled in English Structure for Paragraph Writing (ENG 209) and Writing I (ENG 231) in term 1/2018 were purposively selected. For the data collection process, the research instrument used was a questionnaire, which was divided into four main parts: the general information; Learners’ interest, ability in writing and awareness of writing skills; learners’ strategy and attitude toward writing in English; and factors causing learners to have errors in writing. For the data analysis, frequency and percentages were employed in the study. The findings revealed that all of the respondents were interested in English writing as they found a writing activity is essential and useful. Besides, the majority of respondents know important strategies in writing English. It was also reported that vocabulary knowledge and sentence errors were among the highest factors affecting English writing skills. The respondents also realized that spelling held the third spot. These three factors are considered an obstacle for them to write in English, and it can make them lack confidence in themselves for writing.